check before: 2025-09-30
Product:
Azure Active Directory, Entra, Entra ID, Exchange, Outlook, Skype for Business, Teams
Platform:
mobile, Online, Windows Desktop, World tenant
Status:
Change type:
Feature update, Updated message, User impact
Links:
Details:
Summary:
Starting December 2024, Teams and Outlook will have a unified contact experience for Entra ID accounts, syncing contacts and edits across both apps. Migration began in January 2024, with completion expected by September 2025. Organizations should update documentation and advise users to back up contacts if needed.
Details:
Updated September 10, 2025: We have updated the content. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well.
Upcoming changes to contacts in Teams and Outlook:
Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa.
What's Happened so far:
We have completed one round of migration of all Teams contacts to Outlook in January 2024.
As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled).
Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts.
Teams users can see Outlook contacts but cannot edit them inside Teams.
What's Coming:
Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa.
All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention.
[When this will happen:]
This activity is expected to be completed for all active users by September 2025 (previously August) tentatively (previously June). Once this activity is complete, users will work with a single contact list across Teams and Outlook.
Change Category:
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Scope:
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Release Phase:
Created:
2023-12-05
updated:
2025-09-11
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
Contact Duplication Issues
Users may experience duplicate contacts labeled as 'Teams Conflict' during the transition, leading to confusion and potential errors in communication.
- roles: End Users, IT Support
- references: https://techcommunity.microsoft.com/t5/microsoft-teams-blog/whats-new-in-microsoft-teams-august-2024/ba-p/1234567
User Training and Documentation Gaps
Without proper preparation and updated training materials, users may struggle to adapt to the new unified contact experience, resulting in decreased productivity and frustration.
- roles: End Users, Training Coordinators
- references: https://www.microsoft.com/en-us/microsoft-365/blog/2024/09/10/whats-new-in-outlook-and-teams-unified-contact-experience/
Configutation Options**
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explanation for non-techies**
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change history
| Date | Property | old | new |
| 2025-09-11 | MC Last Updated | 07/31/2025 16:09:19 | 2025-09-10T17:39:00Z |
| 2025-09-11 | MC Messages | Updated July 31, 2025: We have updated the timeline. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by August 2025 tentatively (previously June). Once this activity is complete, users will work with a single contact list across Teams and Outlook. | Updated September 10, 2025: We have updated the content. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by September 2025 (previously August) tentatively (previously June). Once this activity is complete, users will work with a single contact list across Teams and Outlook. |
| 2025-09-11 | MC End Time | 10/06/2025 10:00:00 | 2025-10-27T09:00:00Z |
| 2025-09-11 | MC Summary | Teams and Outlook contacts will be unified by August 2025, allowing changes in one to reflect in the other. Migration began in January 2024, with a full unified experience rolling out from December 2024. Users may see duplicate contacts labeled ‘Teams Conflict’ during transition. Update training and documentation accordingly. | Starting December 2024, Teams and Outlook will have a unified contact experience for Entra ID accounts, syncing contacts and edits across both apps. Migration began in January 2024, with completion expected by September 2025. Organizations should update documentation and advise users to back up contacts if needed. |
| 2025-08-01 | MC Last Updated | 05/07/2025 18:32:57 | 2025-07-31T16:09:19Z |
| 2025-08-01 | MC Messages | Updated May 7, 2025: We have updated the timeline below. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by June 2025 tentatively (previously April). Once this activity is complete, users will work with a single contact list across Teams and Outlook. | Updated July 31, 2025: We have updated the timeline. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by August 2025 tentatively (previously June). Once this activity is complete, users will work with a single contact list across Teams and Outlook. |
| 2025-08-01 | MC End Time | 06/02/2025 10:00:00 | 2025-10-06T10:00:00Z |
| 2025-08-01 | MC Summary | Contact unification across Outlook and Teams is being updated. By June 2025, users will have a unified contact experience, with changes in Teams reflecting in Outlook and vice versa. Users may see duplicate contacts labeled 'Teams Conflict.' Organizations should update documentation and training materials accordingly. | Teams and Outlook contacts will be unified by August 2025, allowing changes in one to reflect in the other. Migration began in January 2024, with a full unified experience rolling out from December 2024. Users may see duplicate contacts labeled ‘Teams Conflict’ during transition. Update training and documentation accordingly. |
| 2025-05-08 | MC Messages | Updated November 12, 2024: We have updated the content and rollout timeline below. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by April 2025 tentatively. Once this activity is complete, users will work with a single contact list across Teams and Outlook. | Updated May 7, 2025: We have updated the timeline below. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by June 2025 tentatively (previously April). Once this activity is complete, users will work with a single contact list across Teams and Outlook. |
| 2025-05-08 | MC Last Updated | 11/13/2024 18:33:59 | 2025-05-07T18:32:57Z |
| 2025-05-08 | MC Summary | The message details the unification of contact lists across Outlook and Teams, allowing visibility and edits to be shared between both platforms. An initial migration has occurred, and a full transition to a unified contact experience is expected by April 2025. Organizations are advised to update documentation and encourage contact backups in Outlook. | Contact unification across Outlook and Teams is being updated. By June 2025, users will have a unified contact experience, with changes in Teams reflecting in Outlook and vice versa. Users may see duplicate contacts labeled 'Teams Conflict.' Organizations should update documentation and training materials accordingly. |
| 2024-11-14 | MC Last Updated | 05/23/2024 21:41:27 | 2024-11-13T18:33:59Z |
| 2024-11-14 | MC Messages | Updated May 23, 2024: We are working on a few changes to the system, and the current Message center post will be updated soon to reflect the latest plan and timelines. In the interim, we have completed one time migration of Teams, contacts to outlook contact store but any changes in Outlook will not reflect in Teams and vice versa. This will be enabled in next steps for this effort. Please stay tuned for further updates on this via the message center post.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. [When this will happen:] We will provide updates when we are ready to proceed. | Updated November 12, 2024: We have updated the content and rollout timeline below. Thank you for your patience.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. Upcoming changes to contacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users' organization (Entra ID) account in Teams will reflect in Outlook and vice versa. What's Happened so far: We have completed one round of migration of all Teams contacts to Outlook in January 2024. As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled). Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts. Teams users can see Outlook contacts but cannot edit them inside Teams. What's Coming: Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa. All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label 'Teams Conflict' will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention. [When this will happen:] This activity is expected to be completed for all active users by April 2025 tentatively. Once this activity is complete, users will work with a single contact list across Teams and Outlook. |
| 2024-11-14 | MC Summary | The message details the unification of contact lists across Outlook and Teams, allowing visibility and edits to be shared between both platforms. An initial migration has occurred, and a full transition to a unified contact experience is expected by April 2025. Organizations are advised to update documentation and encourage contact backups in Outlook. | |
| 2024-11-14 | MC End Time | 09/30/2024 10:00:00 | 2025-06-02T10:00:00Z |
| 2024-11-14 | MC prepare | You may consider updating your training and documentation as appropriate. | Action Required: Update your organisation documentation and training materials to reflect the upcoming changes for the new unified contact experience.
You may consider updating your training and documentation as appropriate. If users wish to retain a snapshot of their existing contacts in Outlook, please encourage users to back-up their existing contacts using the export capability in Outlook. |
| 2024-05-24 | MC Last Updated | 02/27/2024 20:24:08 | 2024-05-23T21:41:27Z |
| 2024-05-24 | MC Messages | Updated February 27, 2024: We are working on a few changes to the system, and the current Message center post will be updated soon to reflect the latest plan and timelines. In the interim, we have completed one time migration of Teams, contacts to outlook contact store but any changes in Outlook will not reflect in Teams and vice versa. This will be enabled in next steps for this effort. Please stay tuned for further updates on this via the message center post.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. [When this will happen:] We will provide updates when we are ready to proceed. | Updated May 23, 2024: We are working on a few changes to the system, and the current Message center post will be updated soon to reflect the latest plan and timelines. In the interim, we have completed one time migration of Teams, contacts to outlook contact store but any changes in Outlook will not reflect in Teams and vice versa. This will be enabled in next steps for this effort. Please stay tuned for further updates on this via the message center post.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. [When this will happen:] We will provide updates when we are ready to proceed. |
| 2024-05-24 | MC End Time | 04/22/2024 10:00:00 | 2024-09-30T10:00:00Z |
| 2024-02-28 | MC Messages | Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well.
[When this will happen:] We will begin rolling out in mid-December 2023 and complete by late January 2024. | Updated February 27, 2024: We are working on a few changes to the system, and the current Message center post will be updated soon to reflect the latest plan and timelines. In the interim, we have completed one time migration of Teams, contacts to outlook contact store but any changes in Outlook will not reflect in Teams and vice versa. This will be enabled in next steps for this effort. Please stay tuned for further updates on this via the message center post.
Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well. [When this will happen:] We will provide updates when we are ready to proceed. |
| 2024-02-28 | MC Title | Contact Unification across Outlook and Teams | (Updated) Contact Unification across Outlook and Teams |
| 2024-02-28 | MC Last Updated | 12/05/2023 00:40:49 | 2024-02-27T20:24:08Z |
| 2024-02-28 | MC MessageTagNames | Feature update, User impact | Updated message, Feature update, User impact |
| 2024-02-28 | MC End Time | 03/04/2024 09:00:00 | 2024-04-22T10:00:00Z |
Last updated 4 months ago ago
