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Message Center

Notices Microsoft posts in the Microsoft 365 admin center, with the changes this installation saw between versions. Collected today from Observed in a reference Microsoft 365 tenant (Reference tenant (MVP)). Verify applicability in your own tenant's Message Center..

Versions captured by this deployment. Earlier versions and notices may be missing; first observed is not first published.

Showing Microsoft 365 suite only · all services

Notices and roadmap items

IDTitleServiceLast updated
MC1515930 Cowork browser use setting renamed to Browser use in Microsoft Copilot Microsoft 365 suite 19 Oct 2026
MC1506727 Microsoft Agent 365: Expanded access to Microsoft agent usage and activity insights in Microsoft 365 admin center Microsoft 365 suite 19 Oct 2026
MC1510951 (Updated) Windows updates are available for 2026 time zone changes in Canada Exchange Online, Microsoft 365 suite, Dynamics 365 Apps 16 Oct 2026
MC1509797 Support for Office LTSC 2021 and additional apps ended on October 13, 2026 Microsoft 365 suite, Microsoft 365 apps, Project for the web 15 Oct 2026
MC1509789 Microsoft Edge: Browser-native XSLT will be disabled by default Microsoft 365 suite 15 Oct 2026
MC1508238 Microsoft Purview | Information Protection: Sensitivity labels for Microsoft Entra security groupsRoadmap: RM568217 Microsoft 365 suite, Microsoft Purview 14 Oct 2026
MC1440972 (Updated) Microsoft Edge: Upgraded Copilot new tab pageRoadmap: RM566703 Microsoft 365 suite 13 Oct 2026
MC1505610 Public CDN is becoming optional during Brand Center setup Microsoft 365 suite, SharePoint Online 12 Oct 2026
MC1387526 Microsoft 365 Backup: Full workload backup for SharePoint, OneDrive, and ExchangeRoadmap: RM464990 Microsoft 365 suite 12 Oct 2026
MC1492959 Audio Overview Updates Microsoft 365 suite, Microsoft 365 apps 9 Oct 2026
MC1490911 Microsoft Edge: Retiring legacy sign-in implementation on Windows Microsoft 365 suite 7 Oct 2026
MC1490899 Microsoft 365: Targeted Release retirement Exchange Online, Microsoft 365 suite, SharePoint Online 7 Oct 2026
MC1454378 (Updated) Microsoft 365: The Next Generation of File & Folder SharingRoadmap: RM492622 Microsoft 365 suite, SharePoint Online, Microsoft OneDrive 7 Oct 2026
MC1489931 Microsoft 365 Backup: Activity LogsRoadmap: RM500019 Microsoft 365 suite 6 Oct 2026
MC1480873 (Updated) Connected Platforms - Agent 365 extends observability to third-party agents Microsoft 365 suite 6 Oct 2026
MC1484007 Updated Copilot in Microsoft Edge Experience Microsoft 365 suite 30 Sep 2026
MC1477184 (Updated) Microsoft 365 admin center: Agent Registry consolidates duplicate agent entries and adds version history Microsoft 365 suite 29 Sep 2026
MC1454397 (Updated) Updates to Tenant External Recipient Rate Limit (TERRL) Quotas for New, Trial, and Education Tenants Microsoft 365 suite 29 Sep 2026
MC1481309 Microsoft Entra ID: Enhance protection of the authentication experience by blocking external script injection Microsoft Entra, Microsoft 365 suite 28 Sep 2026
MC1456609 (Updated) Microsoft Purview | Information Protection: Auto-labeling per-policy coverage reportRoadmap: RM568935 Microsoft 365 suite, Microsoft Purview 28 Sep 2026
MC1187682 (Updated) Microsoft Edge: Microsoft 365 Copilot will support summarization and contextual groundingRoadmap: RM496364, RM499423, RM499424 Microsoft 365 suite 25 Sep 2026
MC1478969 Deprecation of Citrix mVPN Support in Microsoft Edge for Android Microsoft 365 suite 24 Sep 2026
MC1478957 Microsoft 365 profile card: View dotted-line managers in the organization panel Microsoft 365 suite 24 Sep 2026
MC1478946 Microsoft 365 Apps: Cloud Update - Extended rollback support for Monthly Enterprise Channel Microsoft 365 suite, Microsoft 365 apps 24 Sep 2026
MC791110 (Updated) Microsoft Purview | Data Lifecycle Management: New integration with Adaptive protectionRoadmap: RM392839 Microsoft 365 suite, Microsoft Purview 24 Sep 2026
MC1477996 Retirement of Viva Insights (personal insights) and Viva Learning usage reports Microsoft 365 suite 23 Sep 2026
MC1477181 Microsoft Purview | Information Protection: Apply default SharePoint library sensitivity labels to data at restRoadmap: RM559105 Microsoft 365 suite, Microsoft Purview 22 Sep 2026
MC1290821 (Updated) eSignature for Microsoft 365 - Recipient groupsRoadmap: RM560822 Microsoft 365 suite, SharePoint Online 21 Sep 2026
MC1474455 In-app browsing in Copilot app Microsoft 365 suite 21 Sep 2026
MC1474111 Retirement of Microsoft 365 Companion apps Microsoft 365 suite 18 Sep 2026
MC1473151 Microsoft Edge: IE mode is supported through at least the end of 2029, plan your migration Microsoft 365 suite 17 Sep 2026
MC1458480 (Updated) Microsoft Edge: Security Update Alerts in the Edge management serviceRoadmap: RM558435 Microsoft 365 suite 17 Sep 2026
MC1473148 Microsoft 365 Usage Reporting Updates (Microsoft Browser and Visio) Microsoft 365 suite 16 Sep 2026
MC1472429 Support for Office LTSC 2021, and additional apps will end on October 13, 2026 Microsoft 365 suite 15 Sep 2026
MC1472028 Outlook: Change the organizer of meetings Exchange Online, Microsoft 365 suite 14 Sep 2026
MC1470426 Data Privacy: Microsoft Online Services Subprocessor Disclosure Microsoft 365 suite 11 Sep 2026
MC1469958 Microsoft Purview: Auto-labeling scalability, policy management, and reporting enhancementsRoadmap: RM570445 Microsoft 365 suite, Microsoft Purview 10 Sep 2026
MC1469962 Change in sender email address for Copilot emails Microsoft 365 suite, Microsoft 365 Copilot Chat 9 Sep 2026
MC1467356 Deprecation for Manifest V2 (MV2) browser extensions support in Microsoft Edge Microsoft 365 suite 4 Sep 2026
MC1069563 Microsoft 365 admin center: Usage reports to manage metered consumption costs for Microsoft 365 Copilot Chat (preview)Roadmap: RM490738 Microsoft 365 suite 1 Sep 2026
MC1462922 Admin app retiring in Teams, Outlook and Microsoft365.com Exchange Online, Microsoft 365 suite, Microsoft Teams 27 Aug 2026
MC1462914 Microsoft Agent 365: Active Users export for agent usage reporting Microsoft 365 suite, Microsoft 365 Copilot Chat 27 Aug 2026
MC1461528 Microsoft 365 Roadmap is becoming the AI at Work Roadmap Microsoft 365 suite 25 Aug 2026
MC1461154 Microsoft Purview | Information Protection – Auto-labeling scale increase for SharePoint and OneDriveRoadmap: RM567890 Microsoft 365 suite, Microsoft Purview 24 Aug 2026
MC1459136 Microsoft 365 admin center: Usage reports migrating to new domains Microsoft 365 suite 21 Aug 2026
MC1459132 Microsoft Edge: Retirement of Windows Information Protection (WIP) and Microsoft Defender Application Guard (MDAG) Microsoft 365 suite 21 Aug 2026
MC1449170 Microsoft Edge: Retirement of default unload event support Microsoft 365 suite 6 Aug 2026
MC1443510 Microsoft 365: One-time cleanup of aged pending requests in All Agents Microsoft 365 suite 31 Jul 2026
MC1437679 Microsoft 365 Copilot: Capture voice notes in the Microsoft 365 Copilot mobile appRoadmap: RM498640 Microsoft 365 suite 23 Jul 2026
MC1287370 (Updated) Auto upgrade of shared calendars from legacy MAPI model to modern REST model Microsoft 365 suite 21 Jul 2026
MC1217640 Microsoft Purview | Information Protection - Content Explorer: Unscanned data and Classification History summary metricsRoadmap: RM526796 Microsoft 365 suite, Microsoft Purview 7 Jul 2026
MC1278920 Support for Office LTSC 2021, and additional apps will end on October 13, 2026 Microsoft 365 suite 13 Apr 2026
MC1215070 Microsoft 365 admin center multifactor authentication enforcement Microsoft 365 suite 8 Jan 2026
MC1192661 Workspaces in Edge: Upcoming migration to improved architecture Microsoft 365 suite 6 Dec 2025
MC1182696 Microsoft Defender: Application Guard for Office is being removed Microsoft 365 suite 4 Nov 2025
MC985483 Microsoft Graph: New default passcode in the Create Meeting API Microsoft 365 suite 22 Jan 2025

Roadmap items are public; Message Center notices are what this installation's reference tenants received. Each notice links the roadmap items it names, and each roadmap item the notices that name it.

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 20 Oct 21:54 UTC · 257 of 260 readable · 255 fully read · documentation 416/439 current