Microsoft 365 suite Message Center Updates

All 153 Microsoft 365 Message Center announcements for Microsoft 365 suite.

All Microsoft 365 services

• MC1508238: Microsoft Purview | Information Protection: Sensitivity labels for Microsoft Entra security groups
• MC1529467: Microsoft Windows: Updates to address compromised eMudhra certificate authority keys
• MC1546411: Retirement of Viva Insights (personal insights) and Viva Learning usage reports
• MC1542066: Microsoft 365 Copilot: Changes to custom organizational data in MODS for Workforce Insights
• MC1486291: Microsoft 365 Copilot: new guided Copilot onboarding experience
• MC1540526: Microsoft Online Services Subprocessor Disclosure Update
• MC1538999: Microsoft 365 Copilot: Copilot connectors in Work IQ APIs
• MC1217640: Microsoft Purview | Information Protection - Content Explorer: Unscanned data and Classification History summary metrics
• MC1469958: Microsoft Purview: Auto-labeling scalability, policy management, and reporting enhancements
• MC1536057: Increasing user exception limit to 10,000 for Standard-Deferred release preferences
• MC1187682: Microsoft Edge: Microsoft 365 Copilot will support summarization and contextual grounding
• MC1530948: Microsoft Purview | Information Protection: Auto-labeling support for legacy Microsoft Office file formats
• MC1529472: Frontier expands to include public previews in Microsoft Teams, new Outlook for Windows, OneDrive, and SharePoint
• MC1069563: Microsoft 365 admin center: Usage reports to manage metered consumption costs for Microsoft 365 Copilot Chat (preview)
• MC1528009: Microsoft 365 admin center: Retirement of selected Search Analytics capabilities
• MC1510951: Windows updates are available for 2026 time zone changes in Canada
• MC1526676: Microsoft 365 admin center: Manage authoritative sources for Microsoft 365 Copilot Search
• MC1472028: Outlook: Change the organizer of meetings
• MC1526661: Microsoft 365 Apps: Cloud Update - Export Improvements
• MC1492959: Audio Overview Updates
• MC1526468: Update to MC1510951: Canada 2026 time zone changes — Microsoft 365 impact and required admin actions
• MC1521616: Microsoft Graph APIs for Copilot cost management
• MC791110: Microsoft Purview | Data Lifecycle Management: New integration with Adaptive protection
• MC1520901: Insights Agent V2 Frontier
• MC1518032: Microsoft 365 apps: Introducing Update Repair in Inventory
• MC1515930: Cowork browser use setting renamed to Browser use in Microsoft Copilot
• MC1506727: Microsoft Agent 365: Expanded access to Microsoft agent usage and activity insights in Microsoft 365 admin center
• MC1509797: Support for Office LTSC 2021 and additional apps ended on October 13, 2026
• MC1509789: Microsoft Edge: Browser-native XSLT will be disabled by default
• MC1440972: Microsoft Edge: Upgraded Copilot new tab page
• MC1505610: Public CDN is becoming optional during Brand Center setup
• MC1387526: Microsoft 365 Backup: Full workload backup for SharePoint, OneDrive, and Exchange
• MC1490911: Microsoft Edge: Retiring legacy sign-in implementation on Windows
• MC1490899: Microsoft 365: Targeted Release retirement
• MC1454378: Microsoft 365: The Next Generation of File & Folder Sharing
• MC1438571: Default visibility of additional profile card properties in Microsoft 365 profile cards
• MC1489931: Microsoft 365 Backup: Activity Logs
• MC1480873: Connected Platforms - Agent 365 extends observability to third-party agents
• MC1484007: Updated Copilot in Microsoft Edge Experience
• MC1477184: Microsoft 365 admin center: Agent Registry consolidates duplicate agent entries and adds version history
• MC1454397: Updates to Tenant External Recipient Rate Limit (TERRL) Quotas for New, Trial, and Education Tenants
• MC1481309: Microsoft Entra ID: Enhance protection of the authentication experience by blocking external script injection
• MC1456609: Microsoft Purview | Information Protection: Auto-labeling per-policy coverage report
• MC1478969: Deprecation of Citrix mVPN Support in Microsoft Edge for Android
• MC1478957: Microsoft 365 profile card: View dotted-line managers in the organization panel
• MC1478946: Microsoft 365 Apps: Cloud Update - Extended rollback support for Monthly Enterprise Channel
• MC933531: Microsoft Purview | Information Protection: Auto-labeling for Microsoft Azure Storage and Azure SQL
• MC1477996: Retirement of Viva Insights (personal insights) and Viva Learning usage reports
• MC1477186: Microsoft Agent 365: Simplified Agent 365 CLI setup experience
• MC1477181: Microsoft Purview | Information Protection: Apply default SharePoint library sensitivity labels to data at rest
• MC1290821: eSignature for Microsoft 365 - Recipient groups
• MC1474455: In-app browsing in Copilot app
• MC1474111: Retirement of Microsoft 365 Companion apps
• MC1473151: Microsoft Edge: IE mode is supported through at least the end of 2029, plan your migration
• MC1458480: Microsoft Edge: Security Update Alerts in the Edge management service
• MC1473148: Microsoft 365 Usage Reporting Updates (Microsoft Browser and Visio)
• MC1472429: Support for Office LTSC 2021, and additional apps will end on October 13, 2026
• MC1470426: Data Privacy: Microsoft Online Services Subprocessor Disclosure
• MC1469962: Change in sender email address for Copilot emails
• MC1456610: Microsoft 365 Copilot Chat: Updated commercial Copilot endpoint for Microsoft Edge
• MC1467356: Deprecation for Manifest V2 (MV2) browser extensions support in Microsoft Edge
• MC1466299: Microsoft Planner: New Planner usage report in the Microsoft 365 admin center
• MC1462922: Admin app retiring in Teams, Outlook and Microsoft365.com
• MC1462914: Microsoft Agent 365: Active Users export for agent usage reporting
• MC1452372: Microsoft Purview | Information Protection: Auto-labeling scale increase for SharePoint and OneDrive
• MC1461528: Microsoft 365 Roadmap is becoming the AI at Work Roadmap
• MC1461154: Microsoft Purview | Information Protection – Auto-labeling scale increase for SharePoint and OneDrive
• MC1459136: Microsoft 365 admin center: Usage reports migrating to new domains
• MC1459132: Microsoft Edge: Retirement of Windows Information Protection (WIP) and Microsoft Defender Application Guard (MDAG)
• MC1457229: Microsoft 365 Copilot: Import Executive Assistant data with People connectors
• MC1456781: Public preview: Manage agents across multiple tenants from the Microsoft 365 admin center
• MC1449170: Microsoft Edge: Retirement of default unload event support
• MC1393468: Cowork in Frontier: New Value + Usage-based Billing
• MC1447683: Microsoft 365 Copilot: Scheduled Prompts moves to Microsoft 365 Connected Experiences
• MC1443510: Microsoft 365: One-time cleanup of aged pending requests in All Agents
• MC1440976: Microsoft 365 Copilot: Retirement of role-to-skill mapping files in People Skills
• MC1436831: Microsoft 365 Admin agent is now generally available for all admins
• MC1148545: Microsoft 365 admin center - Usage reports: Agent usage (preview)
• MC1437679: Microsoft 365 Copilot: Capture voice notes in the Microsoft 365 Copilot mobile app
• MC1435855: Microsoft Purview: Reverting single capturing group enforcement for custom SIT regex
• MC1287370: Auto upgrade of shared calendars from legacy MAPI model to modern REST model
• MC1227088: Microsoft 365 Copilot: Business justification for Copilot license requests
• MC1422074: OpenAI models will soon be available as a subprocessor in Microsoft 365 Copilot
• MC1419799: Configurable recovery window for Microsoft 365 Backup
• MC1413298: Roadmap information for Microsoft Copilot Studio and agents transitioning to the Microsoft 365 Roadmap
• MC1413309: Microsoft Purview enforcing one capturing group limit for custom sensitive information types
• MC1413301: New in Catalog Management: Create custom group of sites
• MC1409102: Enabling group support for M365 Copilot Release preferences experience
• MC1403210: Data Privacy: Microsoft Online Services Subprocessor Disclosure
• MC1403404: Update to Microsoft Enterprise Content Delivery Network (eCDN) analytics data retention (360 days to 180 days)
• MC1297982: Use sensitivity labels to block all connected experiences that analyze content in Word, Excel, and PowerPoint
• MC1396358: Microsoft Edge: Validate Edge builds early with enterprise preview
• MC1395007: Microsoft Entra: New service plans for Conditional Access and ID Protection for agents
• MC1393800: Microsoft Edge: Extensions monitoring in the Edge management service
• MC1316232: New flexibility and choice for sharing organizational data across Microsoft 365 and Viva apps
• MC1387532: Microsoft Edge moving to a 2-week release cycle starting with Edge 152
• MC1234566: Outlook: retiring “Contact Masking” (hide suggested recipients) - March 31, 2026
• MC1385586: Microsoft 365: Organizational Data – Granular access policy controls for custom attributes
• MC1234661: DLP policies will be able to block Copilot processing of sensitivity‑labeled files in all storage locations
• MC791114: Data Loss Prevention: Decoupling policy tips and email notifications for SharePoint and OneDrive
• MC1338819: Microsoft Edge: Enterprise WebView2 runtime downgrade via Downgrade Version policy
• MC1338811: Microsoft 365 admin center: Retirement of “Add Note” option in support tickets
• MC1330882: Notice - Availability of Microsoft (no Teams) Suites in the EEA
• MC1324288: Microsoft 365 Usage Analytics Power BI template app will be retired
• MC1323272: Data Privacy: Microsoft Online Services Subprocessor Disclosure
• MC1309739: Using groups to enable Frontier access in the Frontier Admin Control
• MC1315217: Microsoft Copilot Studio – Classic agent creation moves from Teams to web experience, retiring June 30, 2026
• MC1072406: Microsoft Edge for Business: New PDF viewer powered by Adobe engine now available for testing in Edge Beta
• MC1154300: New PDF Viewer Enabled by Default in Microsoft Edge Starting October 2025
• MC1311976: Department billing for Microsoft 365 Backup
• MC1308860: Microsoft Purview Content Explorer and Data Explorer: Data Classification List Viewer role required for data access
• MC1308858: Improving Activity Explorer load performance with updated default time range
• MC1308854: Microsoft 365 Copilot: Admins can manage agents at scale with bulk lifecycle actions
• MC1307883: HTML formatting now supported for Message center posts synced to Planner
• MC1301809: Data Privacy: Microsoft Online Services Subprocessor Disclosure
• MC1289720: Microsoft 365 Apps: Cloud Update adds update health reporting
• MC1297981: Agent Registry API transition to Agent 365
• MC1296867: Microsoft Agent 365 becomes generally available (GA)
• MC1296475: New dedicated License Requests page in Microsoft 365 Admin Center
• MC1296473: Microsoft 365 Copilot: New AI Reader role for Agent 365 (read-only access)
• MC1294523: Microsoft Edge: M365 Copilot Search relevance using work browsing history
• MC1189665: Microsoft 365 admin center: Organizational Messages to support email delivery
• MC1262570: Microsoft 365 Copilot: Updates to license request custom flow
• MC1262573: Microsoft Purview: Information Protection – Extended scoping capabilities for sensitivity label policies
• MC1282306: Modernized Change Management for Microsoft 365
• MC1282308: Message center post structure updates may require admin script changes
• MC1280557: Submit agent to the Agent Store from Agent Builder
• MC1280545: Organizational Data Export Capability for Tenant Admins
• MC1247634: Microsoft Agent 365 Generally Available May 1, 2026
• MC1279072: Microsoft 365 Copilot Chat: Use prepaid Copilot Credits without Pay‑As‑You‑Go billing
• MC1279068: Microsoft Purview | Information Protection: Sensitivity label inheritance for Teams meeting artifacts
• MC1255405: Microsoft Edge for Business: Cross-tenant support using Intune Mobile Application Management (MAM)
• MC1278920: Support for Office LTSC 2021, and additional apps will end on October 13, 2026
• MC1250274: Microsoft Edge: Copilot new tab page
• MC1269241: Anthropic Models for Copilot in Word, Excel, and PowerPoint on by Default
• MC1269223: Enabling Flex Routing in the EU and EFTA
• MC1268926: Microsoft AutoUpdate (MAU) CDN Endpoint Update for Mac
• MC1266907: Microsoft Purview | Data Loss Prevention
• MC1111778: Microsoft Purview | Information Protection: Sensitivity label grouping modernization
• MC1263276: Microsoft 365 Copilot: Admins will be able to enable third‑party model providers for specific users and groups
• MC1230456: Microsoft 365 apps for Mac suite installer now includes the Microsoft 365 Copilot app
• MC1260706: Microsoft Purview: Information Protection - Policy sync status for M365 Label publishing policies
• MC1249431: Microsoft Purview | Information Protection – Override manually applied labels and Remove labels with Auto-labeling
• MC1215070: Microsoft 365 admin center multifactor authentication enforcement
• MC1184647: Retirement of Assignments and Courses adaptive card extensions (ACE) in Viva Connections and SharePoint
• MC1198079: Migrate User Data Across Tenants: Mailboxes, OneDrives, and Teams Chats
• MC1193689: Microsoft baseline security mode for Office, SharePoint, Exchange, Teams, and Entra
• MC1192661: Workspaces in Edge: Upcoming migration to improved architecture
• MC1191944: Microsoft Excel: Insert Data from Image retires starting July 2026
• MC1182696: Microsoft Defender: Application Guard for Office is being removed
• MC1084637: Product transitions to the cloud.microsoft domain – May 2025
• MC1024387: Microsoft Purview | Data Loss Prevention: New predicates for email DLP to detect number of domains or recipients
• MC985483: Microsoft Graph: New default passcode in the Create Meeting API