MC1262537: Power Platform admin center – Upcoming update to the enforcement of tenant isolation
Following customer feedback and support ticket evaluation, we have updated our tenant
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).
MC1262523: New resources to help organizations prepare for Secure Boot certificate expirations
Secure Boot certificates begin expiring in June 2026, and IT admins should
MC1262522: The March 2026 Windows non-security preview update is now available
The March 2026 non-security preview update is now available for Windows 11,
MC1262498: Microsoft Copilot Studio - Analyze user sentiment from agent conversations
We are announcing the ability to analyze user sentiment from agent conversations
MC1262315: Microsoft Dataverse – Upcoming Changes to Deleted Records Keeping and Related Storage
We identified that your environment has enabled the setting, Keep deleted Dataverse
MC1262302: Microsoft Dataverse - Restore deleted Dataverse records within a specified timeframe
We are announcing the ability to restore Dataverse table records within a
MC1261848: Dynamics 365 Customer Service - Planned maintenance
We have scheduled your Dynamics 365 Customer Service environment for planned service
MC1261595: Microsoft Teams town halls now support backup Real-Time Messaging Protocol (RTMP) streams
Microsoft Teams town halls will support backup RTMP streams starting late April 2026, enhancing event reliability by automatically switching to a secondary stream if the primary fails. Organizers can configure this in Production tools; the feature requires no admin setup and does not affect atten...
MC1261593: Outlook: Improved handling of disallowed and failed email reactions
Outlook will improve handling of the x-ms-reactions: disallow header in Classic Outlook for Windows by disabling the Reactions button when reactions are disallowed and reverting failed attempts. This update, rolling out May-June 2026, ensures consistent behavior and reduces user confusion without...
MC1261592: View and edit Markdown files in OneDrive and SharePoint
OneDrive and SharePoint will support viewing and editing Markdown (.md) files directly in the browser with a side-by-side editor and preview, starting mid-April 2026. This feature is enabled by default, requires no admin action, and allows easy management of Markdown files alongside other Microso...
MC1261588: Introducing video recap for Microsoft Teams meetings
Microsoft Teams will introduce AI-generated video recaps for recorded English meetings, available only to users with a Microsoft 365 Copilot license. These narrated highlights combine key takeaways and clips, require no admin changes, and will roll out from April to May 2026.
MC1261573: Microsoft Copilot Studio – Tool & Topic Invocation Grader
We are announcing the Tool & Topic Invocation Grader in Microsoft Copilot