from 05/04/2026 to 05/10/2026
33 Office 365 Message Center Items were changed and
22 Office 365 Message Center Items were added
Please note: Only common Message Center messages are in this list you should always check your Message Center for additional messages
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Changes
MC End Time changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1129718 | (Updated) New Feature: Account Manager in Outlook for Windows | 05/04/2026 09:00:00 | 2026-06-22T09:00:00Z | N/A |
| MC1139493 | (Updated) Microsoft Teams Copilot without transcription becomes default for meetings - conversation history now persists | 06/22/2026 09:00:00 | 2026-08-31T09:00:00Z | N/A |
| MC1148545 | (Updated) Microsoft 365 admin center - Usage reports: Agent usage (preview) | 06/15/2026 10:00:00 | 2026-08-31T10:00:00Z | N/A |
| MC1173208 | (Updated) Microsoft Copilot Analytics: Data export public preview for Copilot metrics in the Copilot dashboard | 06/29/2026 09:00:00 | 2026-08-31T09:00:00Z | N/A |
| MC1182004 | (Updated) Microsoft Teams: Chat with anyone with an email address | 06/30/2026 10:00:00 | 2026-05-13T10:00:00Z | N/A |
| MC1227088 | (Updated) Microsoft 365 Copilot: Business justification for Copilot license requests | 06/29/2026 09:00:00 | 2026-07-06T09:00:00Z | N/A |
| MC1239176 | (Updated) Outlook: Delimiter setting admin policy | 05/11/2026 09:00:00 | 2026-06-22T09:00:00Z | N/A |
| MC1245222 | (Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | 08/01/2026 09:00:00 | 2026-11-30T08:00:00Z | N/A |
| MC1254552 | (Updated) Copilot Notebooks: New features coming to Frontier Public | 07/02/2026 09:00:00 | 2026-07-13T09:00:00Z | N/A |
| MC1260707 | (Updated) Microsoft Teams: Catch up in Teams mobile | 06/08/2026 09:00:00 | 2026-07-31T09:00:00Z | N/A |
| MC1266023 | (Updated) Microsoft 365 Copilot: Comprehensive Copilot metrics in Copilot Analytics | 06/30/2026 09:00:00 | 2026-07-13T09:00:00Z | N/A |
| MC1266027 | (Updated) Microsoft Teams: New experience when users minimize the meeting window | 06/30/2026 09:00:00 | 2026-07-27T09:00:00Z | N/A |
| MC1266912 | (Updated) Microsoft 365 Copilot: Intelligent Summaries in Copilot Dashboard | 07/01/2026 09:00:00 | 2026-08-03T09:00:00Z | N/A |
| MC1268933 | (Updated) Viva Engage: Pinned resources and related communities in Teams for iOS | 07/13/2026 09:00:00 | 2026-08-31T09:00:00Z | N/A |
| MC1269207 | (Updated) Viva Engage digest updates: Improvements to weekly | 06/16/2026 09:00:00 | 2026-06-29T09:00:00Z | N/A |
| MC1274551 | (Updated) Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | 06/04/2026 09:00:00 | 2026-06-22T09:00:00Z | N/A |
| MC1280561 | (Updated) Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | 07/01/2026 09:00:00 | 2026-07-27T09:00:00Z | N/A |
| MC1281505 | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import | 06/15/2026 09:00:00 | 2026-10-05T09:00:00Z | N/A |
| MC1294522 | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | 07/08/2026 09:00:00 | 2026-09-21T09:00:00Z | N/A |
| MC906502 | (Updated) Microsoft Outlook: Automatically display automapped calendars | 07/06/2026 09:00:00 | 2026-08-03T09:00:00Z | N/A |
MC How Affect changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1254552 | (Updated) Copilot Notebooks: New features coming to Frontier Public | Who is affected: All Copilot Notebooks users (in the Microsoft 365 app and OneNote) in Frontier Public tenants What will happen: The following new Copilot Notebooks features will become available to Frontier Public tenants starting in late March 2026 and will transition to General Availability according to the timelines listed below. All features are enabled by default. Chat and Page Interactivity: Allows users to edit and create pages in a notebook directly through chat. Frontier Public: late March, 2026 GA: Mid-April 2026 Study Guide: Automatically generates quizzes, flashcards, topic pages, and other learning tools based on notebook content. Frontier Public: late March, 2026 GA: Late April 2026 SharePoint Sites and Folders grounding: Allows users to add SharePoint sites and folders as references so Copilot can use them when reasoning and generating content. Frontier Public: late March, 2026 GA: Early April 2026 PowerPoint agent in Copilot Notebooks: Enables users to create PowerPoint presentations using notebook content and references in a few clicks. Frontier Public: late March, 2026 GA: May 2026 Word agent in Copilot Notebooks: Enables users to create Word documents using notebook content and references in a few clicks. Frontier Public: late March, 2026 GA: May 2026 Sharing to Microsoft 365 Modern Groups: Allows notebooks to be shared directly with Microsoft 365 Modern Groups. Frontier Public: late March, 2026 GA: April 2026 Mind maps: A new interactive visual artifact that helps users understand notebook content through a grounded map of key topics, themes, and relationships. Users can explore nodes, view summaries, and use notebook chat to learn more. In Frontier Public, generated Mind Maps are retained for 30 days and remain private to the creator, including in shared notebooks. Support for sharing and permanent storage will be added before GA. Frontier Public: late March, 2026 GA: Early May 2026 Existing Microsoft 365 permissions and access controls are respected. No general limitations are known beyond those noted for individual features. |
Who is affected: All Copilot Notebooks users (in the Microsoft 365 app and OneNote) in Frontier Public tenants What will happen: The following new Copilot Notebooks features will become available to Frontier Public tenants starting in late March 2026 and will transition to General Availability according to the timelines listed below. All features are enabled by default. Chat and Page Interactivity: Allows users to edit and create pages in a notebook directly through chat. Frontier Public: late March, 2026 GA: mid-April to early June 2026 Study Guide: Automatically generates quizzes, flashcards, topic pages, and other learning tools based on notebook content. Frontier Public: late March, 2026 GA: mid-May to late May 2026 (previously Late April) SharePoint Sites and Folders grounding: Allows users to add SharePoint sites and folders as references so Copilot can use them when reasoning and generating content. Frontier Public: late March, 2026 GA: late May to early June 2026 (previously Early April) PowerPoint agent in Copilot Notebooks: Enables users to create PowerPoint presentations using notebook content and references in a few clicks. Frontier Public: late March, 2026 GA: late May to early June 2026 (previously May) Word agent in Copilot Notebooks: Enables users to create Word documents using notebook content and references in a few clicks. Frontier Public: late March, 2026 GA: late May to early June 2026 (previously May) Sharing to Microsoft 365 Modern Groups: Allows notebooks to be shared directly with Microsoft 365 Modern Groups. Frontier Public: late March, 2026 GA: April 2026 Mind maps: A new interactive visual artifact that helps users understand notebook content through a grounded map of key topics, themes, and relationships. Users can explore nodes, view summaries, and use notebook chat to learn more. Generated Mind Maps are retained for 30 days and remain private to the creator, including in shared notebooks. Frontier Public: late March, 2026 GA: mid-May to early June 2026 Existing Microsoft 365 permissions and access controls are respected. No general limitations are known beyond those noted for individual features. |
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| MC1261586 | (Updated) Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | Who is affected: Microsoft 365 compliance administrators Organizations using Microsoft Teams calling What will happen: Compliance admins can apply Microsoft Purview DLM retention and deletion policies to Teams call logs. Teams call logs stored with Teams compliance data in Exchange Online mailboxes are no longer retained indefinitely by default. Existing Purview retention capabilities and workflows are respected. There is no direct impact to user calling experiences. |
Who is affected: Microsoft 365 compliance administrators Organizations using Microsoft Teams calling What will happen: Compliance admins can apply Microsoft Purview DLM retention and deletion policies to Teams call logs. Teams call logs stored with Teams compliance data in Exchange Online mailboxes are no longer retained indefinitely if new policies scoping teams call logs are setup. Existing Purview retention capabilities and workflows are respected. There is no direct impact to user calling experiences. |
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| MC1296874 | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | Who is affected Users with a Microsoft 365 Copilot license using: Outlook (classic and new) Outlook on the web Microsoft Teams Outlook mobile (iOS and Android) IT admins who manage Copilot agent access and policies in Microsoft 365 What will happen Calendar Agent capabilities will appear in Microsoft 365 Copilot Chat from calendar-related surfaces. Users can enable agent actions by selecting Allow Actions (Frontier) in Copilot Chat. Users can create ongoing, natural-language calendar instructions (for example, "Always accept meetings from my manager if my calendar is free"). Calendar Agent respects each user's Outlook working hours settings. A new activity history view will show actions taken by Copilot, grouped by Accepted, Followed, Declined, and Deleted, with an explanation for each action. The feature is enabled by default for users who have Copilot and are allowed to use agents. No new admin controls are introduced; existing Copilot agent policies apply. Calendar Agent acts only on the signed-in user's calendar and does not operate across mailboxes or tenants. What is not changing: Existing admin policies, permissions, retention, and compliance boundaries remain unchanged. No changes are made to data residency, audit logging, or Purview enforcement. |
Who is affected Users with a Microsoft 365 Copilot license using: Outlook (classic and new) Outlook on the web Microsoft Teams Outlook mobile (iOS and Android) IT admins who manage Copilot agent access and policies in Microsoft 365 What will happen Calendar Agentic capabilities will appear in Microsoft 365 Copilot Chat from calendar-related surfaces. Users can enable agentic actions by selecting Allow Actions (Frontier) in Copilot Chat. Users can create ongoing, natural-language calendar instructions (for example, "Always accept meetings from my manager if my calendar is free"). Calendar Agentic experiences respect each user's Outlook working hours settings. A new activity history view will show actions taken by Copilot, grouped by Accepted, Followed, Declined, and Deleted, with an explanation for each action. The feature is enabled by default for users who have Copilot and are allowed to use agents. No new admin controls are introduced; existing Copilot agent policies apply. Calendar Agentic experiences act only on the signed-in user's calendar and does not operate across mailboxes or tenants. What is not changing: Existing admin policies, permissions, retention, and compliance boundaries remain unchanged. No changes are made to data residency, audit logging, or Purview enforcement. |
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MC Messages changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1129718 | (Updated) New Feature: Account Manager in Outlook for Windows | Updated March 2, 2025: We have updated the timeline. Thank you for your patience. We're introducing a new Account Manager experience in Outlook for Windows. This feature helps users better manage their Microsoft accounts by providing quick access to account details, displaying their profile picture, and enabling account switching (if permitted by your organization). This update aligns the experience with classic Outlook and enhances user productivity. This message is associated with Microsoft 365 Roadmap ID 497546 When this will happen: General Availability (Worldwide): Rollout will begin in mid-March 2026 (previously early March) and is expected to complete by late March 2026 (previously late January). Targeted Release: Rollout will begin in early February 2026 (previously early December 2025) and is expected to complete by late February 2026 (previously late December 2025). |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. We're introducing a new Account Manager experience in Outlook for Windows. This feature helps users better manage their Microsoft accounts by providing quick access to account details, displaying their profile picture, and enabling account switching (if permitted by your organization). This update aligns the experience with classic Outlook and enhances user productivity. This message is associated with Microsoft 365 Roadmap ID 497546 When this will happen: General Availability (Worldwide): Rollout will begin in mid-March 2026 (previously early March) and is expected to complete by mid-May 2026 (previously late March). Targeted Release: Rollout will begin in early February 2026 (previously early December 2025) and is expected to complete by late February 2026 (previously late December 2025). |
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| MC1139493 | (Updated) Microsoft Teams Copilot without transcription becomes default for meetings - conversation history now persists | Updated March 6, 2026: We have updated the timeline. Thank you for your patience. Introduction We're updating the default behavior of Microsoft Teams Copilot in meetings. Copilot without transcription will become the default mode for newly scheduled Teams meetings where Copilot is allowed. Additionally, conversation history will now persist during meetings, improving multitasking and continuity of insights. This update is associated with Microsoft 365 Roadmap ID 478611. When this will happen General Availability (Worldwide): We will begin rolling out in late April 2026 (previously late March) and expect to complete by mid-May 2026 (previously early April). [What's changing?] Who is affected: Affected tenants: If your TeamsMeetingPolicy was created or modified before the Copilot without transcription policy option was introduced (June 2024), your tenant will be affected by this change. Not Affected: If your TeamsMeetingPolicy was created or modified after June 2024 when the Copilot without transcription option was introduced, your tenant will not be affected. What will happen: The default Copilot policy will change from EnabledWithTranscript to Enabled for both new and existing Teams meetings where Copilot is allowed. Copilot and Facilitator will no longer automatically start transcription for meetings in affected tenants. Users must manually enable transcription to use post-meeting Copilot or Facilitator queries. Conversation history will persist during meetings for Copilot without transcription. Tenants with TeamsMeetingPolicy created or modified after June 2024 are not affected. |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. Introduction We're updating the default behavior of Microsoft Teams Copilot in meetings. Copilot without transcription will become the default mode for newly scheduled Teams meetings where Copilot is allowed. Additionally, conversation history will now persist during meetings, improving multitasking and continuity of insights. This update is associated with Microsoft 365 Roadmap ID 478611. When this will happen General Availability (Worldwide): We will begin rolling out in mid-July 2026 (previously late April) and expect to complete by end of July 2026 (previously mid-May). [What's changing?] Who is affected: Affected tenants: If your TeamsMeetingPolicy was created or modified before the Copilot without transcription policy option was introduced (June 2024), your tenant will be affected by this change. Not Affected: If your TeamsMeetingPolicy was created or modified after June 2024 when the Copilot without transcription option was introduced, your tenant will not be affected. What will happen: The default Copilot policy will change from EnabledWithTranscript to Enabled for both new and existing Teams meetings where Copilot is allowed. Copilot and Facilitator will no longer automatically start transcription for meetings in affected tenants. Users must manually enable transcription to use post-meeting Copilot or Facilitator queries. Conversation history will persist during meetings for Copilot without transcription. Tenants with TeamsMeetingPolicy created or modified after June 2024 are not affected. |
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| MC1148545 | (Updated) Microsoft 365 admin center - Usage reports: Agent usage (preview) | Updated March 23, 2025: We have updated the timeline. Thank you for your patience. To help you manage agent adoption for Microsoft 365 Copilot Chat, we are introducing a new usage report in the Microsoft 365 admin center. The report provides visibility into how users in your organization are actively using agents in Microsoft 365 Copilot Chat and includes metrics such as: Total number of active agent users and active agents Usage breakdown per user, per agent, and per user-agent pair Segmentation by license state (licensed vs. unlicensed Microsoft 365 Copilot users) Segmentation by agent creator type (i.e. agents built by your organization, Microsoft, or Microsoft partners) The new report is rolling out in preview and will be available under Reporting > Usage > Microsoft 365 Copilot > Agent. During the preview stage, the report will display a maximum of 30 days of history. In addition, usage information from prior to August 19 2025 will not be available in the report. This report only includes declarative agents. Usage data for SharePoint agents and Custom engine agents will be available in a future update. This message is associated with Microsoft 365 Roadmap ID 497999 [When this will happen:] Public Preview (Worldwide): Available now. General Availability (Worldwide): We will begin rolling out in early May 2026 (previously March) and expect to complete by mid-May 2026 (previously end of March). |
Updated May 8, 2026: We have updated the timeline. Thank you for your patience. To help you manage agent adoption for Microsoft 365 Copilot Chat, we are introducing a new usage report in the Microsoft 365 admin center. The report provides visibility into how users in your organization are actively using agents in Microsoft 365 Copilot Chat and includes metrics such as: Total number of active agent users and active agents Usage breakdown per user, per agent, and per user-agent pair Segmentation by license state (licensed vs. unlicensed Microsoft 365 Copilot users) Segmentation by agent creator type (i.e. agents built by your organization, Microsoft, or Microsoft partners) The new report is rolling out in preview and will be available under Reporting > Usage > Microsoft 365 Copilot > Agent. During the preview stage, the report will display a maximum of 30 days of history. In addition, usage information from prior to August 19 2025 will not be available in the report. This report only includes declarative agents. Usage data for SharePoint agents and Custom engine agents will be available in a future update. This message is associated with Microsoft 365 Roadmap ID 497999 [When this will happen:] Public Preview (Worldwide): Available now. General Availability (Worldwide): We will begin rolling out end of July 2026 (previously early May) and expect to complete end of July 2026 (previously mid-May). |
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| MC1173208 | (Updated) Microsoft Copilot Analytics: Data export public preview for Copilot metrics in the Copilot dashboard | Updated April 21, 2026: We have updated the timeline. This post has also been updated to remind customers that this feature is default-on for Copilot Dashboard users with full company-level data access. The export output remains de-identified, with each user represented by a hashed ID. Please review and take any actions as appropriate for your organization. Thank you for your patience. This MC post is associated with Roadmap ID 500872. [Introduction:] To support deeper analysis of Copilot adoption, Microsoft is introducing a new export capability in the Copilot Dashboard. This feature allows dashboard users with company-level access to download de-identified Copilot usage metrics, aggregated by user and week, from the past six months. Organizations can use this data to track adoption trends, optimize licensing, and support AI transformation strategies. This feature requires at least 50 Microsoft 365 Copilot licenses and applies to the Viva Insights web app. [When this will happen:] Public Preview: Begins in early December 2025 (previously late November 2025), completes by late December 2025. General Availability (Worldwide): Begins in early May 2026 (previously late April), completes by late May 2026 (previously early May). |
Updated May 6, 2026: We have updated the timeline. This post has also been updated to remind customers that this feature is default-on for Copilot Dashboard users with full company-level data access. The export output remains de-identified, with each user represented by a hashed ID. Please review and take any actions as appropriate for your organization. Thank you for your patience. This MC post is associated with Roadmap ID 500872. [Introduction:] To support deeper analysis of Copilot adoption, Microsoft is introducing a new export capability in the Copilot Dashboard. This feature allows dashboard users with company-level access to download de-identified Copilot usage metrics, aggregated by user and week, from the past six months. Organizations can use this data to track adoption trends, optimize licensing, and support AI transformation strategies. This feature requires at least 50 Microsoft 365 Copilot licenses and applies to the Viva Insights web app. [When this will happen:] Public Preview: Begins in early December 2025 (previously late November 2025), completes by late December 2025. General Availability (Worldwide): Begins in early July 2026 (previously early May), completes by late July 2026 (previously late May). |
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| MC1182004 | (Updated) Microsoft Teams: Chat with anyone with an email address | Updated February 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Teams users in tenants with open collaboration policies have long been able to start a chat with anyone who has an email address. However, recipients without a Teams account were previously asked to sign up for one before being able to collaborate. We're introducing a new capability in Microsoft Teams for certain tenants (see 'Who is affected' below) that allows these recipients to join the chat as a guest- no account needed, and as long as it is allowed by the tenant's existing policy configuration. This feature will be available across Windows, Mac, Web, iOS, and Android platforms. This message is associated with Microsoft 365 Roadmap ID 513271. [When this will happen:] Targeted Release: Rollout for users with the aforementioned licenses begun in early November 2025 and was completed in mid-November 2025 General Availability (Worldwide): May 2026 (previously February) |
Updated May 8, 2026: We are not releasing this feature at this time. We apologize for any inconvenience this may cause. [Introduction] Teams users in tenants with open collaboration policies have long been able to start a chat with anyone who has an email address. However, recipients without a Teams account were previously asked to sign up for one before being able to collaborate. We're introducing a new capability in Microsoft Teams for certain tenants (see 'Who is affected' below) that allows these recipients to join the chat as a guest- no account needed, and as long as it is allowed by the tenant's existing policy configuration. This feature will be available across Windows, Mac, Web, iOS, and Android platforms. This message is associated with Microsoft 365 Roadmap ID 513271. [When this will happen:] Targeted Release: Rollout for users with the aforementioned licenses begun in early November 2025 and was completed in mid-November 2025 General Availability (Worldwide): We are not releasing this feature at this time. |
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| MC1186374 | (Updated) Microsoft Teams: Miracast support for Teams Rooms on Windows (Teams Rooms Pro only) | Updated February 27, 2026: We have updated the timeline. Thank you for your patience. [Introduction] To enhance wireless content sharing in meeting spaces, Microsoft Teams Rooms on Windows devices will soon support Miracast. This complements existing options like Teams Cast and HDMI ingest and is available for devices including touch boards. This feature is exclusive to Teams Rooms Pro. This message is associated with Roadmap ID 506748. [When this will happen:] Targeted release: We will begin rolling out in early May 2026 (previously mid-March) and expect to complete by mid-May 2026 (previously end of March). General Availability: We will begin rolling out mid-May 2026 (previously end of March) and expect to complete by late May 2026 (previously mid-April). |
Updated May 6, 2026: We have updated the timeline. Thank you for your patience. [Introduction] To enhance wireless content sharing in meeting spaces, Microsoft Teams Rooms on Windows devices will soon support Miracast. This complements existing options like Teams Cast and HDMI ingest and is available for devices including touch boards. This feature is exclusive to Teams Rooms Pro. This message is associated with Roadmap ID 506748. [When this will happen:] Targeted release: We will begin rolling out in mid-May 2026 (previously early May) and expect to complete by mid-May 2026 (previously end of March). General Availability: We will begin rolling out mid-May 2026 (previously end of March) and expect to complete by late May 2026 (previously mid-April). |
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| MC1219793 | (Updated) Brand impersonation protection for Teams Calling | Updated March 30, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Brand Impersonation Protection for Teams Calling adds proactive safeguards against fraudulent or deceptive external callers who attempt to appear as trusted organizations. This helps reduce social-engineering risks and improves tenant security when users receive first-contact external calls. This update aligns with Microsoft's ongoing investments in caller identity protection and secure collaboration. This message is associated with Microsoft 365 Roadmap ID 543239. [When this will happen:] Targeted Release: Rollout will begin early May (previously early April) and is expected to complete by late May (previously late April). General Availability: Timelines will be communicated in a future message. |
Updated May 5, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Brand Impersonation Protection for Teams Calling adds proactive safeguards against fraudulent or deceptive external callers who attempt to appear as trusted organizations. This helps reduce social-engineering risks and improves tenant security when users receive first-contact external calls. This update aligns with Microsoft's ongoing investments in caller identity protection and secure collaboration. This message is associated with Microsoft 365 Roadmap ID 543239. [When this will happen:] Targeted Release: Rollout will begin mid-May 2026 (previously early May) and is expected to complete by late May (previously late April). General Availability: Timelines will be communicated in a future message. |
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| MC1227088 | (Updated) Microsoft 365 Copilot: Business justification for Copilot license requests | Updated April 30, 2026: We have updated the timeline. Thank you for your patience. [Introduction] To help organizations streamline approval workflows and improve governance, users who request a Microsoft 365 Copilot license will be able to submit a business justification with their request. Admins will see this justification during review, enabling faster and more informed decisions while reducing manual follow-ups. This message is associated with Microsoft 365 Roadmap ID 547731. [When this will happen] General Availability (Worldwide): Rollout will begin in May 2026 (previously late April) and is expected to complete in May 2026 (previously late April). |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. [Introduction] To help organizations streamline approval workflows and improve governance, users who request a Microsoft 365 Copilot license will be able to submit a business justification with their request. Admins will see this justification during review, enabling faster and more informed decisions while reducing manual follow-ups. This message is associated with Microsoft 365 Roadmap ID 547731. [When this will happen] General Availability (Worldwide): Rollout will begin end of May 2026 (previously late April) and is expected to complete by end of May 2026 (previously late April). |
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| MC1238432 | (Updated) Microsoft 365 Copilot app: Branded footer customization | Updated April 27, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're introducing a new co-branding capability that will allow organizations to display a branded footer at the bottom of the Chat screen in the Microsoft 365 Copilot app. This update will enable admins to add their organization's logo to their users' Microsoft 365 Copilot app, helping users confirm they are using their trusted, work-managed Copilot experience. This feature will begin rolling out in early May 2026 (previously late March) and is expected to complete by mid-June 2026 (previously end of May). This message is associated with Microsoft 365 Roadmap ID 555852. [When this will happen] General Availability (Worldwide): Rollout will begin in early May 2026 (previously late March) and is expected to complete by end of May 2026 (previously late April). |
Updated April 27, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're introducing a new co-branding capability that will allow organizations to display a branded footer at the bottom of the Chat screen in the Microsoft 365 Copilot app. This update will enable admins to add their organization's logo to their users' Microsoft 365 Copilot app, helping users confirm they are using their trusted, work-managed Copilot experience. This feature will begin rolling out in early May 2026 (previously late March) and is expected to complete by mid-June 2026 (previously end of May). This message is associated with Microsoft 365 Roadmap ID 555852. [When this will happen] General Availability (Worldwide): Rollout will begin in early May 2026 (previously late March) and is expected to complete by mid-June 2026 (previously end of May). |
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| MC1239176 | (Updated) Outlook: Delimiter setting admin policy | Updated March 19, 2026: We have updated the content. Thank you for your patience. [Introduction] We're adding a new Exchange Online admin policy that gives admins more control over the default Mail Compose and Reply setting that determines whether commas are used as recipient separators. This message is associated with Microsoft 365 Roadmap ID 557676. [When this will happen] General availability (Worldwide): Rollout will begin in early April 2026 and complete by mid-April 2026. |
Updated May 5, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're adding a new Exchange Online admin policy that gives admins more control over the default Mail Compose and Reply setting that determines whether commas are used as recipient separators. This message is associated with Microsoft 365 Roadmap ID 557676. [When this will happen] General availability (Worldwide): Rollout will begin in early April 2026 and complete by mid-May 2026 (previously mid-April). |
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| MC1243549 | (Updated) Retirement of SharePoint One-Time Passcode (SPO OTP) and transition to Microsoft Entra B2B | Updated March 4, 2026: We have updated the content. Thank you for your patience. [Introduction] We are retiring SharePoint One-Time Passcode (SPO OTP) authentication in OneDrive and SharePoint starting July 2026. Beginning in May 2026, new external sharing invitations and authentication will start using Microsoft Entra B2B instead of SPO OTP. This transition simplifies external collaboration, aligns authentication with Microsoft identity standards, and enables consistent guest lifecycle management, governance, and Conditional Access coverage across Microsoft 365. [When this will happen] May 2026: Invitation and authentication for new external sharing begins transitioning to Microsoft Entra B2B. Users who previously authenticated via SPO OTP will continue to have access to specific people links even without a B2B guest account yet. July 2026: Retirement of SPO OTP authentication begins. External users without a guest account get access denied on previously shared specific people links. To restore access, a guest account must be created in Entra B2B, or an allowed user must share/re-share at least one file/folder/site. Retirement is expected to complete by August 31, 2026. |
Updated May 7, 2026: We have updated the content. Thank you for your patience. [Introduction] We are retiring SharePoint One-Time Passcode (SPO OTP) authentication in OneDrive and SharePoint starting July 2026. Beginning in May 2026, new external sharing invitations and authentication will start using Microsoft Entra B2B instead of SPO OTP. This transition simplifies external collaboration, aligns authentication with Microsoft identity standards, and enables consistent guest lifecycle management, governance, and Conditional Access coverage across Microsoft 365. [When this will happen] May & June 2026: Invitation and authentication for new external sharing transitions to Microsoft Entra B2B. Users who previously authenticated via SPO OTP will continue to have access to specific people links even without a B2B guest account yet. July 2026: Retirement of SPO OTP authentication begins. External users without a guest account get access denied on previously shared specific people links. To restore access, a guest account must be created in Entra B2B, or an allowed user must share/re-share at least one file/folder/site. Retirement is expected to complete by August 31, 2026. |
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| MC1245222 | (Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | [Introduction] We're adding support for sending locally stored Word, Excel, and PowerPoint files as email attachments directly through the new Outlook for Windows. This update streamlines the sharing experience and aligns with ongoing efforts to bring feature parity between classic Outlook for Windows and the new Outlook. This message is associated with Microsoft 365 Roadmap ID 557675. [When this will happen] General Availability (Worldwide): We will begin rolling out in early May 2026 and expect to complete by late May 2026. General Availability (GCC): We will begin rolling out in early June 2026 and expect to complete by late June 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're adding support for sending locally stored Word, Excel, and PowerPoint files as email attachments directly through the new Outlook for Windows. This update streamlines the sharing experience and aligns with ongoing efforts to bring feature parity between classic Outlook for Windows and the new Outlook. This message is associated with Microsoft 365 Roadmap ID 557675. [When this will happen] General Availability (Worldwide): We will begin rolling out in early September 2026 (previously early May) and expect to complete by late September 2026 (previously late May). General Availability (GCC): We will begin rolling out in early October 2026 (previously early June) and expect to complete by late October 2026 (previously late June). |
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| MC1250273 | (Updated) Improved copy and paste support for @mentions and shared contacts in Microsoft Teams | Updated March 31, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft Teams is improving the copy and paste experience for messages that contain @mentions, shared contacts, and other supported @tags. Previously, when users copied and pasted messages containing mentions, those mentions could be converted into plain text and lose their interactivity. With this update, Teams preserves supported tags during copy and paste whenever possible. If a tag is valid in the destination conversation, it remains interactive and behaves the same way as when originally authored. If the tag cannot be used in that context, it safely falls back to plain text while preserving the original display text. This ensures a more consistent and reliable messaging experience across chats and channels. This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for the web. It is associated with Microsoft 365 Roadmap ID 558254. [When this will happen:] Targeted Release: Rollout begins early May 2026 (previously early April) and is expected to complete by mid-May 2026 (previously mid-April). General Availability (Worldwide): Rollout begins mid-May 2026 (previously mid-April) and is expected to complete by late May 2026 (previously late April). General Availability (GCC, GCC High): Rollout begins mid-May 2026 (previously early May) and is expected to complete by early June 2026 (previously mid-May). General Availability (DoD): Rollout begins early June 2026 (previously mid-May) and is expected to complete by late June 2026 (previously late May). |
Updated May 6, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft Teams is improving the copy and paste experience for messages that contain @mentions, shared contacts, and other supported @tags. Previously, when users copied and pasted messages containing mentions, those mentions could be converted into plain text and lose their interactivity. With this update, Teams preserves supported tags during copy and paste whenever possible. If a tag is valid in the destination conversation, it remains interactive and behaves the same way as when originally authored. If the tag cannot be used in that context, it safely falls back to plain text while preserving the original display text. This ensures a more consistent and reliable messaging experience across chats and channels. This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for the web. It is associated with Microsoft 365 Roadmap ID 558254. [When this will happen:] Targeted Release: Rollout begins mid-May (previously early May) and is expected to complete by late May 2026 (previously mid-May 2026). General Availability (Worldwide): Rollout begins late May 2026 (previously mid-May) and is expected to complete by early June 2026 (previously late May). General Availability (GCC, GCC High): Rollout begins early June 2026 (previously mid-May 2026 (previously early May) and is expected to complete by mid-June 2026 (previously early June). General Availability (DoD): Rollout begins mid-June 2026 (previously early June) and is expected to complete by late June 2026 (previously late May). |
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| MC1254552 | (Updated) Copilot Notebooks: New features coming to Frontier Public | Updated March 20, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're introducing several new Copilot Notebooks features to the Frontier Public environment to help users learn faster, create content more efficiently, and collaborate more easily within their organization. These enhancements build on customer feedback and expand how Copilot can reason over notebook content and connected Microsoft 365 resources. Each feature will reach General Availability (GA) on its own schedule following Frontier Public availability. [When this will happen:] Frontier Public rollout: Beginning late March, 2026, with broad availability across Frontier Public tenants by March 28, 2026. General Availability (GA) (Worldwide): Rolling rollout from early April 2026 through early May 2026. Each feature will reach GA on its own schedule. Rollout is gradual; availability may vary by tenant and feature. |
Updated May 5, 2026: We have updated the timeline and content. Thank you for your patience. [Introduction] We're introducing several new Copilot Notebooks features to the Frontier Public environment to help users learn faster, create content more efficiently, and collaborate more easily within their organization. These enhancements build on customer feedback and expand how Copilot can reason over notebook content and connected Microsoft 365 resources. Each feature will reach General Availability (GA) on its own schedule following Frontier Public availability. [When this will happen:] Frontier Public rollout: Beginning late March, 2026, with broad availability across Frontier Public tenants by March 28, 2026. General Availability (GA) (Worldwide): Rolling rollout from early April 2026 through early June 2026 (previously early May). Each feature will reach GA on its own schedule. Rollout is gradual; availability may vary by tenant and feature. |
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| MC1260707 | (Updated) Microsoft Teams: Catch up in Teams mobile | [Introduction] We are introducing Catch up in Microsoft Teams mobile. This new, consolidated view helps users triage conversations that need their attention across chats, meeting chats, and followed channels or threads. The experience uses a mobile-optimized card layout with swipe actions to help users stay organized and act quickly on important messages. This message is associated with Microsoft 365 Roadmap ID 558108. [When this will happen] Targeted Release: Rolling out in early April 2026; expected completion in early April 2026. General Availability (Worldwide): Rolling out in early May 2026; expected completion in early May 2026. |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We are introducing Catch up in Microsoft Teams mobile. This new, consolidated view helps users triage conversations that need their attention across chats, meeting chats, and followed channels or threads. The experience uses a mobile-optimized card layout with swipe actions to help users stay organized and act quickly on important messages. This message is associated with Microsoft 365 Roadmap ID 558108. [When this will happen] Targeted Release: Rolling out in early April 2026; expected completion in early April 2026. General Availability (Worldwide): Rolling out in early May 2026; expected completion in late June 2026 (previously early May). |
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| MC1261586 | (Updated) Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | [Introduction] We are introducing Microsoft Purview Data Lifecycle Management (DLM) retention support for Microsoft Teams call logs. Microsoft Teams stores call logs in several persistent locations, such as Call Detail Record (CDR) logs, which are currently retained indefinitely. However, regulatory requirements in various countries specify maximum retention periods for calling-related logs, creating a potential compliance gap. This update enables organizations to manage retention or deletion of Teams call logs to meet regulatory obligations, while still supporting evolving product features and business needs. This message is associated with Microsoft 365 Roadmap ID 559261. [When this will happen:] General Availability (Worldwide): Rollout will begin in late April 2026 and is expected to complete by late April 2026. |
Updated May 8, 2026: We have updated the content. Thank you for your patience. [Introduction] We are introducing Microsoft Purview Data Lifecycle Management (DLM) retention support for Microsoft Teams call logs. Microsoft Teams stores call logs in several persistent locations, such as Call Detail Record (CDR) logs, which are currently retained indefinitely. However, regulatory requirements in various countries specify maximum retention periods for calling-related logs, creating a potential compliance gap. This update enables organizations to manage retention or deletion of Teams call logs to meet regulatory obligations, while still supporting evolving product features and business needs. This message is associated with Microsoft 365 Roadmap ID 559261. [When this will happen:] General Availability (Worldwide): Rollout will begin in late April 2026 and is expected to complete by late April 2026. |
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| MC1266021 | (Updated) Microsoft 365 Copilot: New chat-first design for the Copilot mobile app | [Introduction] We are introducing a refreshed chat-first design in the Microsoft 365 Copilot mobile app. This update modernizes the interface and streamlines navigation to make it faster and easier for users to start, continue, and manage chats. The improved experience is based on customer feedback and aligns the mobile app more closely with the broader Copilot visual design. The updated design will release first on iOS, followed shortly by Android. [When this will happen] Public Preview: Rolling out in late April 2026 and expected to complete in late June 2026. General Availability (Worldwide, GCC, GCCH, and DoD): Rolling out in late April 2026 and expected to complete in late August 2026. |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We are introducing a refreshed chat-first design in the Microsoft 365 Copilot mobile app. This update modernizes the interface and streamlines navigation to make it faster and easier for users to start, continue, and manage chats. The improved experience is based on customer feedback and aligns the mobile app more closely with the broader Copilot visual design. The updated design will release first on iOS, followed shortly by Android. [When this will happen] Public Preview: Rolling out in mid-May 2026 (previously late April) and expected to complete in late June 2026. General Availability (Worldwide, GCC, GCCH, and DoD): Rolling out in mid-May 2026 (previously late April) and expected to complete in late August 2026. |
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| MC1266023 | (Updated) Microsoft 365 Copilot: Comprehensive Copilot metrics in Copilot Analytics | Updated April 15, 2026: We have updated the content. Thank you for your patience. [Introduction] We are adding new Copilot metrics across Microsoft 365 apps to help you better understand how users engage with Copilot. These metrics include actions taken in the Microsoft 365 Copilot app, Microsoft Edge, and OneNote, and intent-based usage across Outlook, Word, Excel, and PowerPoint. This update expands visibility into how users adopt Copilot and supports improved insights in the Copilot Dashboard and Advanced Analysis in Copilot Analytics. This message is associated with Microsoft 365 Roadmap ID 557981. [When this will happen] General Availability (Worldwide): We will begin rolling out in late April 2026 and expect to complete in late May 2026. |
Updated May 4, 2026: We have updated the content. Thank you for your patience. [Introduction] We are adding new Copilot metrics across Microsoft 365 apps to help you better understand how users engage with Copilot. These metrics include actions taken in the Microsoft 365 Copilot app, Microsoft Edge, and OneNote, and intent-based usage across Outlook, Word, Excel, and PowerPoint. This update expands visibility into how users adopt Copilot and supports improved insights in the Copilot Dashboard and Advanced Analysis in Copilot Analytics. This message is associated with Microsoft 365 Roadmap ID 557981. [When this will happen] General Availability (Worldwide): We will begin rolling out in late May 2026 (previously late April) and expect to complete in early June 2026 (previously late May). |
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| MC1266027 | (Updated) Microsoft Teams: New experience when users minimize the meeting window | Updated April 14, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We are improving the Microsoft Teams meeting experience when the active meeting window is minimized. This update helps users stay engaged in meetings while multitasking across other apps. With this change, users can perform key in-meeting actions-such as raising their hand and sending reactions-without restoring the full Teams meeting window. Users can also choose between two different minimized views, depending on how much meeting context they want to keep visible while they work. This change does not affect the experience when users are sharing their screen in a Teams meeting. This message applies to Teams for Windows desktop and Teams for Mac desktop. It is associated with Microsoft 365 Roadmap ID 557179. [When this will happen:] Targeted Release: Rollout begins early May 2026 (previously mid-April) and is expected to complete by early May 2026 (previously mid-April). General Availability (Worldwide): Rollout begins mid-May 2026 (previously late April) and is expected to complete by late May 2026 (previously early May). |
Updated May 6, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We are improving the Microsoft Teams meeting experience when the active meeting window is minimized. This update helps users stay engaged in meetings while multitasking across other apps. With this change, users can perform key in-meeting actions-such as raising their hand and sending reactions-without restoring the full Teams meeting window. Users can also choose between two different minimized views, depending on how much meeting context they want to keep visible while they work. This change does not affect the experience when users are sharing their screen in a Teams meeting. This message applies to Teams for Windows desktop and Teams for Mac desktop. It is associated with Microsoft 365 Roadmap ID 557179. [When this will happen:] Targeted Release: Rollout begins mid-May 2026 (previously early May) and is expected to complete by late May 2026 (previously early May). General Availability (Worldwide): Rollout begins early June 2026 (previously mid-May) and is expected to complete by late June 2026 (previously late May). |
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| MC1266912 | (Updated) Microsoft 365 Copilot: Intelligent Summaries in Copilot Dashboard | Updated April 15, 2026: We have updated the content. Thank you for your patience. [Introduction] Intelligent summaries in Copilot Dashboard help you quickly understand what's driving Copilot adoption in your organization. These AI-generated insights highlight key usage trends, areas of success, and opportunities where focused attention can accelerate value. Suggested prompts guide deeper exploration of underlying drivers and adoption patterns. This message is associated with Microsoft 365 Roadmap ID 557681. [When this will happen] General Availability (Worldwide): Rollout will begin in late April 2026 and is expected to complete by late May 2026. |
Updated May 4, 2026: We have updated the content. Thank you for your patience. [Introduction] Intelligent summaries in Copilot Dashboard help you quickly understand what's driving Copilot adoption in your organization. These AI-generated insights highlight key usage trends, areas of success, and opportunities where focused attention can accelerate value. Suggested prompts guide deeper exploration of underlying drivers and adoption patterns. This message is associated with Microsoft 365 Roadmap ID 557681. [When this will happen] General Availability (Worldwide): Rollout will begin in early June 2026 (previously late April) and is expected to complete by late June 2026 (previously late May). |
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| MC1268933 | (Updated) Viva Engage: Pinned resources and related communities in Teams for iOS | Updated April 30, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're improving the Viva Engage experience in Microsoft Teams for iOS by bringing pinned resources and related communities into the Teams mobile app. Pinned resources highlight important links and files within a community, while related communities help users discover other relevant Viva Engage communities. These are two separate features that work together to improve information access and community discovery. This update aligns the iOS experience with Engage on the web, the Engage mobile app, and Teams for Android, helping users discover important content and related communities more easily-especially those who rely on Teams on iOS as their primary communication tool. This message is associated with Roadmap ID 559107. [When this will happen:] General Availability (Worldwide): Rollout begins in early May 2026 (previously late April) and is expected to complete by early June 2026 (previously late April). |
Updated May 5, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're improving the Viva Engage experience in Microsoft Teams for iOS by bringing pinned resources and related communities into the Teams mobile app. Pinned resources highlight important links and files within a community, while related communities help users discover other relevant Viva Engage communities. These are two separate features that work together to improve information access and community discovery. This update aligns the iOS experience with Engage on the web, the Engage mobile app, and Teams for Android, helping users discover important content and related communities more easily-especially those who rely on Teams on iOS as their primary communication tool. This message is associated with Roadmap ID 559107. [When this will happen:] General Availability (Worldwide): Rollout begins in late May 2026 (previously early May) and is expected to complete by late July 2026 (previously early June). |
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| MC1269207 | (Updated) Viva Engage digest updates: Improvements to weekly | [Introduction] We're improving the overall digests email experience in Viva Engage to reduce email noise and surface more relevant content for users to stay informed. We're enhancing the weekly digest email to include new, subscribed catch-up content and while no longer sending the daily digest on the same day. [When this will happen:] Some users may begin to see these changes starting early April 2026 General Availability (Worldwide): Rollout begins in early May 2026 and completes by mid-May 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're improving the overall digests email experience in Viva Engage to reduce email noise and surface more relevant content for users to stay informed. We're enhancing the weekly digest email to include new, subscribed catch-up content and while no longer sending the daily digest on the same day. [When this will happen:] Some users may begin to see these changes starting early April 2026 General Availability (Worldwide): Rollout begins in early May 2026 and completes by late May 2026 (previously mid-May). |
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| MC1274551 | (Updated) Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | [Introduction] To help organizations schedule shared spaces more efficiently, Microsoft Teams will introduce the ability for users to book future meetings directly from Teams panel devices running on Android. This change reduces the need to switch to a desktop or mobile calendar and helps streamline ad-hoc and near-term scheduling in shared spaces. The feature will be available for rooms with Teams Rooms Pro and Shared Device licenses. This message is associated with Microsoft 365 Roadmap ID 557168. Note: This feature is supported only on Teams panel devices running Android and is not available on non-Android panel hardware. [When this will happen] General Availability (Worldwide, GCC, GCCH): We will begin rolling out in early May 2026 and expect to complete in early May 2026. |
Updated May 5, 2026: We have updated the timeline. Thank you for your patience. [Introduction] To help organizations schedule shared spaces more efficiently, Microsoft Teams will introduce the ability for users to book future meetings directly from Teams panel devices running on Android. This change reduces the need to switch to a desktop or mobile calendar and helps streamline ad-hoc and near-term scheduling in shared spaces. The feature will be available for rooms with Teams Rooms Pro and Shared Device licenses. This message is associated with Microsoft 365 Roadmap ID 557168. Note: This feature is supported only on Teams panel devices running Android and is not available on non-Android panel hardware. [When this will happen] General Availability (Worldwide, GCC, GCCH): We will begin rolling out in mid-May 2026 (previously early May) and expect to complete in mid-May 2026 (previously early May). |
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| MC1279093 | (Updated) Microsoft Defender for Office 365: Enhancing how we handle promotional mail | Updated April 16, 2026: We have updated the timeline and content. Thank you for your patience. [Introduction] We are enhancing how Microsoft Defender for Office 365 identifies and manages promotional email. Promotional messages will be tagged as "promotions" (previously "Bulk" in preview) and can be moved automatically to a new Promotions folder. The system learns from user actions, such as moving messages into or out of the Promotions folder and applies those preferences to future messages. These improvements reduce inbox clutter and help users stay focused while still receiving promotional content they want. [When this will happen] Public Preview (Limited): We will begin rolling out in mid-April 2026 and expect to complete by end of April 2026 (previously late April). To be included in the public preview program, send an email to BulkMailPreviews@microsoft.com indicating: Organization name, Tenant ID and your onmicrosoft.com domain (e.g contoso.onmicrosoft.com) . Slots are limited and will close on April 30th, 2026. General Availability (Worldwide): We will begin rolling out in early July 2026 and expect to complete by late July 2026. General Availability (DoD, GCC, GCC High): We will begin rolling out in early July 2026 and expect to complete by mid-August 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We are enhancing how Microsoft Defender for Office 365 identifies and manages promotional email. Promotional messages will be tagged as "promotions" (previously "Bulk" in preview) and can be moved automatically to a new Promotions folder. The system learns from user actions, such as moving messages into or out of the Promotions folder and applies those preferences to future messages. These improvements reduce inbox clutter and help users stay focused while still receiving promotional content they want. [When this will happen] Public Preview (Limited): We will begin rolling out in mid-April 2026 and expect to complete by mid-May 2026 (previously end of April). To be included in the public preview program, send an email to BulkMailPreviews@microsoft.com indicating: Organization name, Tenant ID and your onmicrosoft.com domain (e.g contoso.onmicrosoft.com). Slots are limited and will close on May 15th, 2026. General Availability (Worldwide): We will begin rolling out in early July 2026 and expect to complete by late July 2026. General Availability (DoD, GCC, GCC High): We will begin rolling out in early July 2026 and expect to complete by mid-August 2026. |
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| MC1280561 | (Updated) Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | [Introduction] We're improving breakout room setup in Microsoft Teams by adding support for CSV import of breakout room assignments. This update helps organizers reduce manual setup time and prepare structured meetings-such as trainings, workshops, and large collaboration sessions-more efficiently. This message is associated with Roadmap ID 559387. [When this will happen:] Targeted Release: We will begin rolling out in early May 2026 and expect to complete by mid-May 2026. General Availability (Worldwide): Rollout begins in mid-May 2026 and completes by late May 2026. |
Updated May 6, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We're improving breakout room setup in Microsoft Teams by adding support for CSV import of breakout room assignments. This update helps organizers reduce manual setup time and prepare structured meetings-such as trainings, workshops, and large collaboration sessions-more efficiently. This message is associated with Roadmap ID 559387. [When this will happen:] Targeted Release: We will begin rolling out in mid-May 2026 (previously early May) and expect to complete by late May 2026 (previously mid-May). General Availability (Worldwide): Rollout begins in late May 2026 (previously mid-May) and completes by late June 2026 (previously late May). |
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| MC1281505 | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import | [Introduction] Azure PST Import provides a structured, PowerShell-based way for administrators to import PST files stored in Azure Blob Storage into Exchange Online mailboxes, which are commonly used to store archived Outlook mailbox content. This capability helps organizations migrate historical email data in a controlled and auditable way by validating readiness before importing and by providing reports throughout the process. The process starts by creating an Azure PST Import endpoint to establish the connection between Azure storage and Exchange Online. Administrators then run a migration batch in Analyze mode to review readiness and validate the input before proceeding. Once the analysis results are reviewed, they use those results to create and start the import batch, which begins importing the PST files into the specified mailboxes. This message is associated with Microsoft 365 Roadmap ID 557559. [When this will happen] Global rollout Start: May 4, 2026 Complete: May 15, 2026 |
Updated May 5, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Azure PST Import provides a structured, PowerShell-based way for administrators to import PST files stored in Azure Blob Storage into Exchange Online mailboxes, which are commonly used to store archived Outlook mailbox content. This capability helps organizations migrate historical email data in a controlled and auditable way by validating readiness before importing and by providing reports throughout the process. The process starts by creating an Azure PST Import endpoint to establish the connection between Azure storage and Exchange Online. Administrators then run a migration batch in Analyze mode to review readiness and validate the input before proceeding. Once the analysis results are reviewed, they use those results to create and start the import batch, which begins importing the PST files into the specified mailboxes. This message is associated with Microsoft 365 Roadmap ID 557559. [When this will happen] Global rollout Start: August 31, 2026 (previously May 4) Complete: September 1, 2026 (previously May 15) |
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| MC1287369 | (Updated) Microsoft Teams: Live chat will be renamed to Customer Connect | [Introduction] Live chat in Microsoft Teams enables small and medium businesses to connect with customers through a chat widget embedded on their websites. Website visitors can chat directly with business employees, who receive and manage these conversations in Teams. Transcripts from live chats are stored in a central team and channel, which organizations can use for ticket management and follow-up. To better align the feature name with how customers use it, Microsoft will rename Live chat to Customer Connect. This is a name change only; there are no functional or behavioral changes. [When this will happen] General Availability (Worldwide): We will begin rolling out this change in late April 2026 and expect to complete the rollout by the end of May 2026. |
Updated May 6, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Live chat in Microsoft Teams enables small and medium businesses to connect with customers through a chat widget embedded on their websites. Website visitors can chat directly with business employees, who receive and manage these conversations in Teams. Transcripts from live chats are stored in a central team and channel, which organizations can use for ticket management and follow-up. To better align the feature name with how customers use it, Microsoft will rename Live chat to Customer Connect. This is a name change only; there are no functional or behavioral changes. [When this will happen] General Availability (Worldwide): We will begin rolling out this change in mid-May 2026 (previously late April) and expect to complete the rollout by the end of May 2026. |
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| MC1287370 | (Updated) Auto upgrade of shared calendars from legacy MAPI model to modern REST model | Updated April 29, 2026: We have updated the content. Thank you for your patience. [Introduction] Microsoft is introducing an automatic upgrade for shared calendars in Outlook and Exchange Online, transitioning from the legacy MAPI-based model to the modern REST-based model. This server-side upgrade will improve calendar sync reliability, performance, and consistency for delegates and users who access shared calendars. The change is designed to be seamless and will not require any action from users or administrators. [When this will happen] General Availability (Worldwide): Rollout starting early May 2026 and completing by late July 2026 GCC High /DoD: Rollout starting mid-May 2026 and completing by late July 2026 Note: Rollout will be progressive and timing may vary by tenant. |
Updated May 6, 2026: We have updated the content. Thank you for your patience. [Introduction] Microsoft is introducing an automatic upgrade for shared calendars in Outlook and Exchange Online, transitioning from the legacy MAPI-based model to the modern REST-based model. This server-side upgrade will improve calendar sync reliability, performance, and consistency for delegates and users who access shared calendars. The change is designed to be seamless and will not require any action from users or administrators. [When this will happen] General Availability (Worldwide): Rollout starting mid-May 2026 (previously early May) and completing by late July 2026 GCC High /DoD: Rollout starting end of June 2026 (previously mid-May) and completing by late July 2026 Note: Rollout will be progressive and timing may vary by tenant. |
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| MC1289720 | (Updated) Microsoft 365 Apps: Cloud Update adds update health reporting | [Introduction] Update health builds on existing Cloud Update insights by adding clearer, more actionable diagnostics when an update does not complete successfully. Administrators see descriptive, easy-to-understand error messaging aligned with error codes, along with aggregated issue views across Cloud Update-managed devices. This message is associated with Microsoft 365 Roadmap ID 558249. [When this will happen] Public Preview: Rollout beginning in April 2026 and is expected to complete by mid-May 2026. General Availability (Worldwide): Rollout will begin in late May 2026 and is expected to complete by late-May 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Update health builds on existing Cloud Update insights by adding clearer, more actionable diagnostics when an update does not complete successfully. Administrators see descriptive, easy-to-understand error messaging aligned with error codes, along with aggregated issue views across Cloud Update-managed devices. This message is associated with Microsoft 365 Roadmap ID 558249. [When this will happen] Public Preview: Rollout beginning in April 2026 and is expected to complete by mid-May 2026. General Availability (Worldwide): Rollout will begin in mid-May 2026 (previously late May) and is expected to complete by late-May 2026. |
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| MC1294522 | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | [Introduction] Microsoft Teams Rooms on Android will soon be able to join third-party meetings using Session Initiation Protocol (SIP). This capability enables seamless cross-platform interoperability, allowing users to connect to external meeting services directly from Teams Rooms on Android devices while maintaining a consistent and reliable meeting experience across diverse meeting platforms. This message is associated with Microsoft 365 Roadmap ID 558539. [When this will happen:] General Availability (Worldwide): We will begin rolling out in early June 2026 and expect to complete by early June 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft Teams Rooms on Android will soon be able to join third-party meetings using Session Initiation Protocol (SIP). This capability enables seamless cross-platform interoperability, allowing users to connect to external meeting services directly from Teams Rooms on Android devices while maintaining a consistent and reliable meeting experience across diverse meeting platforms. This message is associated with Microsoft 365 Roadmap ID 558539. [When this will happen:] General Availability (Worldwide): We will begin rolling out in early June 2026 and expect to complete by mid-August 2026 (previously early June). |
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| MC1296480 | (Updated) Microsoft 365 Copilot will use private community and event content as grounding sources | [Introduction] Microsoft 365 Copilot will begin using content from private communities and private events as grounding sources to generate responses. This change helps Copilot provide more relevant and context-aware answers by incorporating content that users already have access to, while continuing to respect existing permissions and security controls. This message is associated with Microsoft 365 Roadmap ID 515144. [When this will happen] General Availability (Worldwide): We will begin rolling out this feature in May 2026 and expect to complete the rollout by late June 2026. |
Updated May 4, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft 365 Copilot will begin using content from private communities and private events as grounding sources to generate responses. This change helps Copilot provide more relevant and context-aware answers by incorporating content that users already have access to, while continuing to respect existing permissions and security controls. This message is associated with Microsoft 365 Roadmap ID 515144. [When this will happen] General Availability (Worldwide): We will begin rolling out this feature in late May 2026 and expect to complete the rollout by late June 2026. |
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| MC1296874 | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | [Introduction] We're introducing Calendar Agent capabilities in Microsoft 365 Copilot to help users reduce meeting overload and automate routine calendar decisions. With natural-language instructions, users can allow Copilot to automatically accept, follow, decline, or remove canceled meetings based on rules they define. This capability builds on existing Copilot agent controls and respects current tenant compliance and governance settings, while helping users save time and stay focused. [When this will happen] Rolling out to Frontier: Rollout start: Late April 2026 Rollout end: Early May 2026 |
Updated May 5, 2026: We have updated the content below to show as intended. Thank you for your patience. [Introduction] We're introducing Calendar Agentic capabilities in Microsoft 365 Copilot to help users reduce meeting overload and automate routine calendar decisions. With natural-language instructions, users can allow Copilot to automatically accept, follow, decline, or remove canceled meetings based on rules they define. This capability builds on existing Copilot agent controls and respects current tenant compliance and governance settings, while helping users save time and stay focused. [When this will happen] Rolling out to Frontier: Rollout start: Late April 2026 Rollout end: Early May 2026 |
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| MC906502 | (Updated) Microsoft Outlook: Automatically display automapped calendars | Updated April 20, 2026: We have updated the timeline. Thank you for your patience. Coming soon: Users will be able to automatically see their automapped calendars when toggling from classic Microsoft Outlook to new Outlook for Windows. This message applies to classic Outlook for Windows desktop and new Outlook for Windows desktop. This message is associated with Microsoft 365 Roadmap ID 415168. [When this will happen:] General Availability: We will begin rolling out May 2026 (previously end of May) and expect to complete by end of May 2026 (previously end of June). |
Updated May 7, 2026: We have updated the timeline. Thank you for your patience. Coming soon: Users will be able to automatically see their automapped calendars when toggling from classic Microsoft Outlook to new Outlook for Windows. This message applies to classic Outlook for Windows desktop and new Outlook for Windows desktop. This message is associated with Microsoft 365 Roadmap ID 415168. [When this will happen:] General Availability: We will begin rolling out end of May 2026 (previously May) and expect to complete by end of June 2026 (previously end of May). |
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MC MessageTagNames changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1245222 | (Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1250273 | (Updated) Improved copy and paste support for @mentions and shared contacts in Microsoft Teams | Feature update, User impact | Updated message, Feature update, User impact | N/A |
| MC1260707 | (Updated) Microsoft Teams: Catch up in Teams mobile | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1261586 | (Updated) Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | Feature update, Admin impact | Updated message, Feature update, Admin impact | N/A |
| MC1266021 | (Updated) Microsoft 365 Copilot: New chat-first design for the Copilot mobile app | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1269207 | (Updated) Viva Engage digest updates: Improvements to weekly | Feature update, User impact | Updated message, Feature update, User impact | N/A |
| MC1274551 | (Updated) Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1280561 | (Updated) Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | New feature, User impact | Updated message, New feature, User impact | N/A |
| MC1281505 | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1287369 | (Updated) Microsoft Teams: Live chat will be renamed to Customer Connect | Feature update, User impact, Admin impact | Updated message, Feature update, User impact, Admin impact | N/A |
| MC1289720 | (Updated) Microsoft 365 Apps: Cloud Update adds update health reporting | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1294522 | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | New feature, User impact | Updated message, New feature, User impact | N/A |
| MC1296480 | (Updated) Microsoft 365 Copilot will use private community and event content as grounding sources | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
| MC1296874 | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact | N/A |
MC prepare changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1294522 | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | Test the feature with your lower-ring Teams Rooms on Android devices. Prepare educational material for users in advance of release. Identify users who frequently collaborate with external organizations using third-party meeting platforms and communicate upcoming capabilities. Ensure that all Teams Rooms on Android devices that require this functionality are licensed with Teams Rooms Pro. Update internal documentation for meeting room usage if applicable. Communicate this change to your helpdesk and support teams. Learn more: SIP and H.323 Dialing with Teams Rooms | Microsoft Learn (will be updated before rollout) [Compliance considerations:] No compliance considerations identified, review as appropriate for your organization. https://learn.microsoft.com/microsoftteams/rooms/meetings-with-sip-h323-devices https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=558539 |
Test the feature with your lower-ring Teams Rooms on Android devices. Prepare educational material for users in advance of release. Identify users who frequently collaborate with external organizations using third-party meeting platforms and communicate upcoming capabilities. Ensure that all Teams Rooms on Android devices that require this functionality are licensed with Teams Rooms Pro. Update internal documentation for meeting room usage if applicable. Communicate this change to your helpdesk and support teams. Learn more: SIP and H.323 Dialing with Teams Rooms | Microsoft Learn (will be updated before rollout) [Compliance considerations:] No compliance considerations identified, review as appropriate for your organization. https://learn.microsoft.com/microsoftteams/rooms/third-party-join?tabs=MTRA#step-1-determine-which-third-party-meeting-join-solution-is-right-for-your-teams-rooms https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=558539 |
N/A |
| MC1296874 | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | No action is required if your organization already allows Copilot agents. Review your existing Copilot agent policies to confirm which users are permitted to enable agent actions. Consider notifying helpdesk or end users that Copilot may take automated calendar actions once users enable the feature. Update internal guidance if you document Copilot or Outlook calendar behavior. Learn more: Copilot in Outlook: New agentic experiences for email and calendar | Outlook Blog Frontier program - Microsoft Adoption [Compliance considerations] QuestionAnswer Does this change alter how existing customer data is processed, stored, or accessed?Yes. Calendar Agent processes existing calendar data to evaluate meetings and take user-authorized actions (accept, follow, decline, delete) based on natural-language instructions. Does this change introduce or significantly modify AI/ML or agent capabilities that interact with customer data?Yes. This change introduces Calendar Agent capabilities that use AI to evaluate calendar events and take automated actions within the signed-in user's mailbox, subject to user consent and admin policy. Does this change provide end users a new way of interacting with generative AI?Yes. Users can define persistent, natural-language instructions that allow Copilot to take automated calendar actions on their behalf. Does this change allow users to enable or disable the feature themselves?Yes. Users explicitly enable agent actions by selecting "Allow Actions" in Copilot Chat, subject to existing admin policies. https://techcommunity.microsoft.com/blog/outlook/copilot-in-outlook-new-agentic-experiences-for-email-and-calendar/4514601 https://www.microsoft.com/microsoft-365-copilot/frontier-program |
No action is required if your organization already allows Copilot agents. Review your existing Copilot agent policies to confirm which users are permitted to enable agentic actions. Consider notifying helpdesk or end users that Copilot may take automated calendar actions once users enable the feature. Update internal guidance if you document Copilot or Outlook calendar behavior. Learn more: Copilot in Outlook: New agentic experiences for email and calendar | Outlook Blog Frontier program - Microsoft Adoption [Compliance considerations] QuestionAnswer Does this change alter how existing customer data is processed, stored, or accessed?Yes. Calendar Agentic experiences process existing calendar data to evaluate meetings and take user-authorized actions (accept, follow, decline, delete) based on natural-language instructions. Does this change introduce or significantly modify AI/ML or agent capabilities that interact with customer data?Yes. This change introduces Calendar Agentic capabilities that use AI to evaluate calendar events and take automated actions within the signed-in user's mailbox, subject to user consent and admin policy. Does this change provide end users a new way of interacting with generative AI?Yes. Users can define persistent, natural-language instructions that allow Copilot to take automated calendar actions on their behalf. Does this change allow users to enable or disable the feature themselves?Yes. Users explicitly enable agentic actions by selecting "Allow Actions" in Copilot Chat, subject to existing admin policies. https://techcommunity.microsoft.com/blog/outlook/copilot-in-outlook-new-agentic-experiences-for-email-and-calendar/4514601 https://www.microsoft.com/microsoft-365-copilot/frontier-program |
N/A |
MC Title changes
| MC ID | MC Title | Old Value | New Value | MC Action required by |
|---|---|---|---|---|
| MC1245222 | (Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | (Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows | N/A |
| MC1260707 | (Updated) Microsoft Teams: Catch up in Teams mobile | Microsoft Teams: Catch up in Teams mobile | (Updated) Microsoft Teams: Catch up in Teams mobile | N/A |
| MC1261586 | (Updated) Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | (Updated) Microsoft Purview: Data Lifecycle Management - Retention support Microsoft Teams call logs | N/A |
| MC1266021 | (Updated) Microsoft 365 Copilot: New chat-first design for the Copilot mobile app | Microsoft 365 Copilot: New chat-first design for the Copilot mobile app | (Updated) Microsoft 365 Copilot: New chat-first design for the Copilot mobile app | N/A |
| MC1269207 | (Updated) Viva Engage digest updates: Improvements to weekly | Viva Engage digest updates: Improvements to weekly | (Updated) Viva Engage digest updates: Improvements to weekly | N/A |
| MC1274551 | (Updated) Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | (Updated) Microsoft Teams: Book future meetings from Microsoft Teams panels (Android) | N/A |
| MC1280561 | (Updated) Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | (Updated) Assign participants to breakout rooms using CSV import in Microsoft Teams meetings | N/A |
| MC1281505 | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import | Microsoft Purview: Data Lifecycle Management- Azure PST Import | (Updated) Microsoft Purview: Data Lifecycle Management- Azure PST Import | N/A |
| MC1287369 | (Updated) Microsoft Teams: Live chat will be renamed to Customer Connect | Microsoft Teams: Live chat will be renamed to Customer Connect | (Updated) Microsoft Teams: Live chat will be renamed to Customer Connect | N/A |
| MC1289720 | (Updated) Microsoft 365 Apps: Cloud Update adds update health reporting | Microsoft 365 Apps: Cloud Update adds update health reporting | (Updated) Microsoft 365 Apps: Cloud Update adds update health reporting | N/A |
| MC1294522 | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | (Updated) Microsoft Teams: Enhanced cross-platform join via Session Initiation Protocol (SIP) for Teams Rooms on Android | N/A |
| MC1296480 | (Updated) Microsoft 365 Copilot will use private community and event content as grounding sources | Microsoft 365 Copilot will use private community and event content as grounding sources | (Updated) Microsoft 365 Copilot will use private community and event content as grounding sources | N/A |
| MC1296874 | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | Introducing Calendar Agent capabilities in Microsoft 365 Copilot | (Updated) Introducing Calendar Agentic capabilities in Microsoft 365 Copilot | N/A |
CW19 New Office 365 Message Center items
| MC ID | MC Title | MC Category | MC Workload | MC Major Change | MC Action required by |
|---|---|---|---|---|---|
| MC1300981 | Power Apps - Dataverse Agent users with Microsoft Entra Agent ID | Stay Informed | Power Apps | False | N/A |
| MC1300584 | Microsoft Entra: App Instance Lock enabled by default for new applications | Plan For Change | Microsoft Entra | False | 05/28/2026 |
| MC1301833 | Track notifications delivery for Storyline Announcements in Viva Engage | Stay Informed | Microsoft Viva | False | N/A |
| MC1301831 | Microsoft Purview: Data Security Investigations – Introducing optical character recognition (OCR) support | Plan For Change | Microsoft Purview | True | N/A |
| MC1301824 | Updates available for Microsoft 365 Apps for Current Channel | Stay Informed | Microsoft 365 apps | False | N/A |
| MC1301809 | Data Privacy: Microsoft Online Services Subprocessor Disclosure | Stay Informed | Microsoft 365 suite | False | N/A |
| MC1301802 | Change Optics report for Exchange Online begins public preview | Stay Informed | Exchange Online | False | N/A |
| MC1302908 | Outlook: Support for storing S/MIME certificates in contacts in new Outlook | Stay Informed | Exchange Online, Microsoft 365 apps | False | N/A |
| MC1302905 | Microsoft Purview compliance portal: Purview SDK embedded in Agent Framework SDK | Stay Informed | Microsoft Purview | False | N/A |
| MC1302904 | Viva Engage Communities and Storylines in Teams – Individual enablement controls | Stay Informed | Microsoft Teams, Microsoft Viva | False | N/A |
| MC1302903 | Teams meeting templates: Fundamentals and security upgrade | Prevent Or Fix Issue | Microsoft Teams | False | N/A |
| MC1302902 | Unlocking deeper Copilot insights with enhanced Power BI filtering | Stay Informed | Microsoft Viva | False | N/A |
| MC1302699 | Power Automate – Test subflows with test suite in Power Automate for desktop | Stay Informed | Microsoft Power Automate | False | N/A |
| MC1303745 | Microsoft Power Automate - Compare flow versions | Stay Informed | Microsoft Power Automate | False | N/A |
| MC1303719 | Microsoft Entra: Upcoming changes to federatedTokenValidationPolicy default settings | Plan For Change | Microsoft Entra | False | 08/11/2026 |
| MC1303717 | Default compose font: Administrators can allow users to change the default font in Outlook for iOS and Android | Stay Informed | Exchange Online | False | N/A |
| MC1303716 | SharePoint News web part: New Filmstrip layout and multi-site news support | Stay Informed | SharePoint Online | False | N/A |
| MC1304293 | Updates to SharePoint home sites | Plan For Change | SharePoint Online | True | N/A |
| MC1304291 | Microsoft Purview: Data loss prevention inline controls for prompts in Microsoft Foundry apps and agents | Stay Informed | Microsoft Purview | False | N/A |
| MC1304290 | 2026 Microsoft 365 Packaging Update | Plan For Change | Exchange Online | True | N/A |
| MC1304289 | Lock-free coauthoring in Microsoft Word | Stay Informed | Microsoft 365 apps | False | N/A |
| MC1304287 | Microsoft Exchange Online: Upcoming secure-by-default changes for Exchange APIs | Plan For Change | Exchange Online | False | N/A |
