check before: 2025-05-15
Product:
Exchange, OneDrive, Outlook, SharePoint
Platform:
Online, US Instances, Web, Windows Desktop, World tenant
Status:
In development
Change type:
New feature, Admin impact
Links:
Details:
We are adding more functionality to offline mode in the new Outlook for Windows. You will now be able to open and save attachments from your emails without an internet connection.
Please note that this is only scoped to classic file attachments. OneDrive and SharePoint links in the body of the emails will still need a connection to be opened.
For this functionality to work you need to make sure Offline is enabled and offline attachments are enabled.
At the user level you can verify this by checking two settings in new Outlook Settings - General - Offline:
Enable offline email, calendar and people
Include file attachments
This functionality will also be enabled or disabled based on the True/False behavior of the already existing Mailbox Policy: OWAMailboxPolicy- OfflineEnabledWin.
Attachments from emails within the timeframe and folder scope selected in the "Settings - General - Offline" will be synced and available locally for users to open without an internet connection.
This message is associated with Microsoft 365 Roadmap ID 472026
[When this will happen:]
Targeted Release (Worldwide): We will begin rolling out on mid-May 2025 and expect to complete by late May 2025.
General Availability (Worldwide): We will begin rolling out on late June 2025 and expect to complete by mid-July 2025.
General Availability (GCC): We will begin rolling out on mid-July 2025 and expect to complete by late July 2025.
Change Category:
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Scope:
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Release Phase:
General Availability, Targeted Release
Created:
2025-04-04
updated:
2025-04-04
Task Type
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Docu to Check
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MS How does it affect me
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summary for non-techies**
The new Outlook for Windows update, rolling out from mid-May 2025, will allow users to open and save traditional email attachments offline, provided they configure their settings for offline access, though links to OneDrive or SharePoint files will still require an internet connection.
Direct effects for Operations**
Offline Functionality Misconfiguration
If the offline settings are not properly configured before the change, users may be unable to access attachments offline, leading to frustration and decreased productivity.
- roles: End Users, IT Administrators
- references: https://learn.microsoft.com/powershell/module/exchange/set-owamailboxpolicy?view=exchange-ps#-offlineenabledwin, https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters%3D&searchterms=472026
User Experience Degradation
Users may experience confusion if they expect to access all types of attachments offline, but only classic file attachments are supported, potentially leading to missed deadlines.
- roles: End Users, Project Managers
- references: https://learn.microsoft.com/powershell/module/exchange/set-owamailboxpolicy?view=exchange-ps#-offlineenabledwin, https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters%3D&searchterms=472026
Increased Support Requests
Without proper communication and training regarding the new offline functionality, IT support may see a spike in requests related to accessing attachments, straining resources.
- roles: IT Support Staff, End Users
- references: https://learn.microsoft.com/powershell/module/exchange/set-owamailboxpolicy?view=exchange-ps#-offlineenabledwin, https://www.microsoft.com/microsoft-365/roadmap?rtc=1%26filters%3D&searchterms=472026
Configutation Options**
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Opportunities**
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Potentional Risks**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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Last updated 2 weeks ago
