M365 Archive

Microsoft 365 Message Center Archive

A fast, searchable archive of 6,067 Microsoft 365 Message Center announcements and Roadmap items. Track tenant-relevant changes, rollout dates, and service updates — with the full revision history of every message.

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All Microsoft 365 Message Center and Roadmap announcements

MessageActions
MC1477184
Microsoft 365 admin center: Agent Registry consolidates duplicate agent entries and adds version history
Sep 22, 2026|Microsoft 365 suite
MC1387681
Microsoft Purview | Insider Risk Management: Policy recommendation panel in IRM
Jun 11, 2026|Microsoft Purview
MC1470887
Microsoft Teams: Personal message reminders for chat and channels
Sep 11, 2026|Microsoft Teams
MC1458472
Simplified Copilot experience in Microsoft Teams
Aug 21, 2026|Microsoft Teams
MC1458470
Simplified Copilot experience in Microsoft Outlook
Aug 21, 2026|Exchange Online
MC1288531Major
Microsoft Viva - Copilot Analytics: Export agent data from the Agent Dashboard
Apr 22, 2026|Microsoft Viva
MC1454397
Updates to Tenant External Recipient Rate Limit (TERRL) Quotas for New, Trial, and Education Tenants
Aug 14, 2026|Microsoft 365 suite
MC1481325
Microsoft SharePoint: Retirement of SharePoint Page Agent (Frontier)
Sep 29, 2026|SharePoint Online
MC1481318
Microsoft Defender XDR: Detection source support in alert tuning rules
Sep 28, 2026|Microsoft Defender XDR
MC1481317Major
Microsoft Purview | Insider Risk Management: Retirement of Data Risk Graph
Sep 28, 2026|Microsoft Purview
MC1481316
Microsoft Teams: Enable Teams apps and agents for existing applications in your organization
Sep 28, 2026|Microsoft Teams
MC1481315Major
Microsoft Purview: Retirement of Data Security Posture Management (DSPM) classic and DSPM for AI classic experiences
Sep 28, 2026|Microsoft Purview
MC1481313Major
Microsoft Purview | DLM: Legacy Teams retention policies that cover Copilot will be treated as Teams-only
Sep 28, 2026|Microsoft Purview
MC1481309Action by Oct 19, 2026
Microsoft Entra ID: Enhance protection of the authentication experience by blocking external script injection
Sep 28, 2026|Microsoft Entra
MC1456609
Microsoft Purview | Information Protection: Auto-labeling per-policy coverage report
Aug 17, 2026|Microsoft 365 suite
RM571884
Word: Legal plugins in Copilot
Sep 28, 2026|Word
RM571692
Microsoft Edge: Updated performance information in tab hover cards
Sep 28, 2026|Microsoft Edge
RM571309
Microsoft Purview: Information Protection-Auto-labeling scale increase for SharePoint and OneDrive
Sep 28, 2026|Microsoft Purview
RM571308
OneDrive: Prompt gallery for Copilot
Sep 28, 2026|OneDrive
RM570963
Microsoft Clipchamp: Copilot video creation updates
Sep 28, 2026|Microsoft Clipchamp
RM570857
Dynamics 365 Field Service: Track costs for non-billable field work
Sep 28, 2026|Dynamics 365 Field Service
RM570665
Outlook: Send availability in Outlook mobile apps
Sep 28, 2026|Outlook
RM571879
Microsoft Teams: Granular Conditional Access for Teams meetings
Sep 21, 2026|Microsoft Teams
RM570469
Microsoft Copilot (Microsoft M365): Copilot Chat can now better match search results from text that appears inside images embedded in Word and PowerPoint files
Sep 10, 2026|Microsoft Copilot (Microsoft 365)
RM570962
Microsoft Teams: Multi-line call history tabs in the Calls app
Sep 9, 2026|Microsoft Teams
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