MC1126054: Upgrade to Windows 11 with Windows Autopatch groups
Use Windows Autopatch groups to gradually roll out Windows 11 before Windows
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).
MC1125497: External workbook links to blocked file types will be disabled by default
Starting October 2025, external workbook links to blocked file types will be disabled by default, showing a #BLOCKED error for new links and preventing refresh of existing ones. Administrators can revert this via registry or group policy settings. A rollout and user warnings will occur from Octob...
MC1125491: Microsoft Outlook for Windows: Add attachments while offline
Microsoft Outlook for Windows will allow users to add file attachments to emails while offline, sending them automatically when reconnected. Rollout starts mid-August 2025 for Targeted Release and mid-October 2025 for General Availability. Admins can manage this via the OWAMailboxPolicy-OfflineEn...
MC1125489: Outlook | Save an Event as a Draft
Outlook will allow saving meetings as drafts starting July 2025, showing “[Draft]” in titles. Users can discard and save events as drafts with attendees, available by default on mobile. No admin action is needed; inform users and update training as needed. No compliance issues identified.
MC1125486: Microsoft 365 Copilot: Enhanced presentation creation quality
Microsoft 365 Copilot will enhance presentation creation with improved content depth, narrative flow, structure, and design, saving presentations to OneDrive. The update rolls out worldwide from mid to late August 2025, requires no admin action, and has some limitations like no template selection...
MC1125449: Updates available for Microsoft 365 Apps for Current Channel
We've released updates to the following update channel for Microsoft
MC1125273: Power Platform admin center – Information regarding the end of support for classic PPAC
Starting on September 3, 2025, the classic Power Platform admin center (PPAC)
MC1124568: Microsoft Teams: Edit and manage Teams Town Hall instances in Microsoft Outlook
Organizers and co-organizers can now edit Teams Town Hall event details directly from Outlook via a link to the edit page. This feature, rolling out worldwide in August 2025, improves event management without changing settings or permissions. No action is required, but informing organizers is rec...
MC1124567: Power BI Cognitive Services and Azure Machine Learning features retiring; transition to Fabric AI services
Power BI is retiring Cognitive Services and Azure Machine Learning features by September 15, 2025, transitioning AI capabilities to Microsoft Fabric. New model creation stops August 11, 2025; existing models refresh until September 15. No admin action needed; users should prepare by migrating to ...
MC1124564: Microsoft Outlook: Copilot chat now available to summarize emails for more users
Outlook's Copilot chat now lets users summarize email threads with one click, available to those with Copilot chat pinned, even without a Copilot license. Rolling out worldwide from August to October 2025, it's enabled by default, manageable via policies, and integrates with compliance and audit ...
MC1124563: Microsoft 365: New map-based desk booking experience in Microsoft Places
Microsoft Places introduces a new map-based desk booking experience for Teams Premium users, unifying desk reservations across apps with interactive floor maps, colleague seating visibility, partial/multi-day bookings, delegation, and admin check-in controls. Rollout begins mid-August 2025, enhan...
MC1124464: Dynamics 365 Contact Center - Use Azure Communication Service-based SMS Mobile Numbers
We are announcing the ability to use Azure Communication Service-based SMS mobile