MC1142601: Microsoft Copilot Studio - Block the use of maker-provided credentials for authentication
We are announcing the ability for admins to enforce the use of
Microsoft 365 Message Center
An archive of Message Center updates - curated and preserved for when Microsoft changes things faster than you can say "rolling out." Find the latest and past Message Center posts right here. Updated daily at 1am (UK time).
MC1142494: Windows Backup for Organizations is now available
Windows Backup for Organizations is now generally available. It provides a simple
MC1142493: The August 2025 Windows non-security preview update is now available for some supported versions of Windows
The August 2025 non-security preview update is now available for Windows 11,
MC1142045: Dynamics 365 Field Service - Service Update for Station 3
The Dynamics 365 Field Service application is scheduled for a new release
MC1141958: Microsoft Teams: Choose to hide inactive channels
Microsoft Teams will offer opt-in suggestions to hide inactive channels, allowing users to review and choose which channels to hide. Users can toggle this feature in Settings or manage channels manually. The rollout begins late August 2025, with no admin action required.
MC1141957: Upcoming Retirement of Sub-Domains Feature in Defender for Cloud Apps – Cloud Discovery
The sub-domains feature in Microsoft Defender for Cloud Apps – Cloud Discovery will be retired starting September 22, 2025, and fully deprecated by December 31, 2025, due to low usage. No admin action is needed, but sub-domain insights will no longer be available after deprecation.
MC1141956: Microsoft Entra: Refreshed credential enrollment and management UX
Microsoft Entra will roll out a refreshed credential enrollment and management user experience in early November 2025, improving usability and accessibility without changing functionality. No action is required, but informing help desk teams is recommended to ease the transition. No compliance is...
MC1141953: Microsoft Viva : New Posts tab added to Communications dashboard
Microsoft Viva is adding a new Posts tab to the Communications dashboard, allowing users to manage drafts, scheduled, and published posts, filter by ownership, and create posts directly. Rolling out mid-September to October 2025, it’s on by default with no admin action needed.
MC1141949: AI actions coming to SharePoint document libraries
AI file actions are expanding to SharePoint document libraries on the web, enabling users with a Copilot license to summarize, compare, generate FAQs, ask questions, and create audio overviews from files. The feature is on by default, rolling out from mid-May to mid-September 2025, requiring no a...
MC1141945: Executable name update for Microsoft 365 Copilot app for Windows
The Microsoft 365 Copilot app for Windows will change its executable name from Webviewhost.exe to M365Copilot.exe after September 20, 2025. The update is automatic for Microsoft Store users with auto-updates enabled. No functionality changes occur, but organizations should update dependencies if ...
MC1141861: Microsoft Copilot Studio – Information about the preview and experimental AI models setting
We are announcing a product feature setting, preview and experimental AI models,
MC1141830: Get ready for Windows quality updates out of the box
Starting in September 2025, the latest Windows quality updates will be available