Multiple account access to Copilot in Microsoft 365 desktop and mobile apps
From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Rollout
Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".
Schedule dates changed in the text
Date phrases in schedule sentences differ between the versions this installation saw- Seen 2 Jul 2025
mid-June 2025→ early July 2025 - Seen 29 May 2025 mid-June 2025
- Seen 2 Apr 2025
January 30, 2025, late March 2025 - Seen 31 Jan 2025 January 30, 2025
Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.
What the notice says
Microsoft’s text, safely structuredUpdated October 1, 2025: Today we announced multiple updates to our Microsoft 365 subscription lineup for individuals. Multiple account access allows individuals with these subscriptions to access Microsoft 365 Copilot value while at work through the Microsoft 365 apps.
As mentioned previously, enterprise data protection continues to apply for files accessed with the user’s organizational identity, regardless of which account grants Copilot access. Learn more about what this means for your organization.
If you wish to restrict multiple account access to Copilot, you can use the “Multiple account access to Copilot for work documents” Cloud Policy.
For more information, refer to documentation.
Multiple account access to Copilot in Microsoft 365 desktop and mobile apps will be available soon.
When will this happen
General availability (Worldwide): We will begin rolling out in early March 2025 and expect to complete by early July 2025 (previously mid-June).
Cloud Policy to manage use will be available by late January 2025.
How this will affect your organization
As an M365 service, Copilot can be used across signed in accounts in clients that allow you to sign in with multiple accounts. This lets users use their Copilot value on any document to which they have permission. Note that Copilot data protection is always based on the identity used to access the file. This ensures enterprise data protection for files in your organization, regardless of which account grants Copilot access. The setting for web grounding in Copilot is also based on the identity used to access the file. If you disabled web grounding in Copilot, users will not be able to use web grounding even when using Copilot access from another account. This feature will be available starting in March 2025, at which point, users signed into accounts with external Copilot licenses will be able to use Copilot on their work and school documents in Word, Excel, PowerPoint, Outlook and OneNote desktop and mobile apps.
What you need to do to prepare
If you wish to restrict multiple account access to Copilot, you can use the “Multiple account access to Copilot for work documents” Cloud Policy. This policy setting is expected to be available in Cloud Policy by the end of January 2025
Additional information
For more information, see Multiple account access to Copilot for work and school documents.
What changed
Between archive captures, newest firstUpdated
July 2,October 1, 2025:We have updatedToday we announced multiple updates to our Microsoft 365 subscription lineup for individuals. Multiple account access allows individuals with these subscriptions to access Microsoft 365 Copilot value while at work through the Microsoft 365 apps. As mentioned previously, enterprise data protection continues to apply for files accessed with thetimeline below. Thankuser’s organizational identity, regardless of which account grants Copilot access. Learn more about what this means for your organization. If you wish to restrict multiple account access to Copilot, you can use the “Multiple account access to Copilot foryour patience.work documents” Cloud Policy. For more information, refer to documentation. Multiple account access to Copilot in Microsoft 365 desktop and mobile apps …Updated
May 29,July 2, 2025: We have updated the timeline below. Thank you for your patience. … begin rolling out in early March 2025 and expect to complete bymid-Juneearly July 2025 (previouslymid-May).mid-June). Cloud Policy to manage use will be available by late January 2025. …Updated May
7,29, 2025: We have updated the timeline below. Thank you for your patience. … begin rolling out in early March 2025 and expect to complete bymid-Maymid-June 2025 (previouslylate April).mid-May). Cloud Policy to manage use will be available by late January 2025. …Updated
April 2,May 7, 2025: We have updated therollouttimeline below. Thank you for your patience. Multiple account access to Copilot … begin rolling out in early March 2025 and expect to complete bylate Aprilmid-May (previously lateMarch 2025).April). Cloud Policy to manage use will be available by late January 2025. …Updated
January 31,April 2, 2025:The policy setting is available in Cloud Policy as of January 30, 2025. CurrentlyWe have updated thepolicy setting is only available in English. But we’re working on making the localized versions available as soon as we can.rollout timeline below. Thank you for your patience. Multiple account access to Copilot in Microsoft 365 desktop and mobile apps … rolling out in early March 2025 and expect to complete by late April (previously late March2025.2025). Cloud Policy to manage use will be available by late January 2025. …- Tags
New feature, User impact, Admin impact→ Updated message, New feature, User impact, Admin impact
Updated January 31, 2025: The policy setting is available in Cloud Policy as of January 30, 2025. Currently the policy setting is only available in English. But we’re working on making the localized versions available as soon as we can. Multiple account access to Copilot in Microsoft 365 desktop and mobile apps …
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