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MC1221452 Major change
Microsoft Entra ID introduces passkey profiles and synced passkeys, allowing group-based configurations. Automatic migration for eligible tenants starts May 2026.
Services: Microsoft Entra
MC1532256
Granular Conditional Access for Teams meetings allows admins to enforce targeted security requirements, ensuring participants meet organizational standards before joining meetings.
Services: Microsoft Teams
MC1519855
Choose Your Own Telephony Provider is now GA in Entra ID; Microsoft SMS/voice authentication retires February 1, 2027. Set up CYOT to maintain SMS/voice authentication for needed users.
Services: Microsoft Entra
MC1429018 Major change
Microsoft Teams introduces AI generated meeting memory files for Copilot and Facilitator, improving context-aware responses while ensuring strong privacy and secure storage in SharePoint Embedded.
Services: Microsoft Teams, Microsoft Copilot (Microsoft 365)
MC1481315 Major change
Starting mid-March 2027, Microsoft will retire DSPM classic and DSPM for AI classic in Purview. Organizations must transition to the unified DSPM experience for data security posture management.
Services: Microsoft Purview
MC1446796 Major change
Exchange Web Services (EWS) deprecation begins October 1, 2026. Cross-tenant Free/Busy, MailTips, and Calendar Sharing will migrate to Microsoft 365 Cross-Tenant Access Policy.
Services: Exchange Online
MC1227622 Major change
Teams Android device management is moving from Teams admin center to Teams Rooms Pro Management portal, unifying Teams device management for admins.
Services: Microsoft Teams, Microsoft 365 for the web
MC1528013 Major change
SharePoint Server access via Standalone SharePoint mobile apps for iOS/Android is being retired; apps will support SharePoint Online only.
Services: SharePoint Online
MC1528009 Major change
Retiring selected Search Analytics (Summary, User/Query, Answer Analytics) in various Microsoft 365 search experiences; SharePoint and Connector Analytics unaffected.
Services: Microsoft 365 suite
MC1528000 Major change
Microsoft-provided SMS and voice authentication in Entra ID will retire starting February 1, 2027. Migrate users or configure CYOT to avoid sign-in disruption.
Services: Microsoft Entra
MC1510951 Major change
Windows updates add region-specific time zones for 2026 Alberta, Manitoba, and BC changes; clocks in affected areas will not be set back on Nov 1, 2026.
Services: Exchange Online, Microsoft 365 suite, Dynamics 365 Apps, Power BI, Windows, Power Platform
MC1526780
Microsoft responded to eMudhra certificate authority compromise by updating Windows and Edge trust lists; out-of-band updates are available for devices not auto-updating certificate trust.
Services: Windows
MC1526679
Default Meeting Templates let IT admins automatically enforce preferred Teams meeting options, including protection, when users schedule meetings via Outlook or Teams calendar.
Services: Microsoft Teams
MC1441784
Copilot in classic Outlook gets a visually enhanced entry point near the ribbon, surfacing contextual AI-powered recommendations for tasks like email and calendar management.
Services: Exchange Online, Microsoft Copilot (Microsoft 365)
MC1526468
Windows and Microsoft 365 require updated time zone definitions for correct scheduling in impacted Canadian regions; admins must update devices and review recurring meetings.
Services: Microsoft 365 suite
MC1220762 Major change
Retiring MDE and Defender XDR Advanced Hunting APIs; transition to Microsoft Graph Security API for unified integration and schema. Update workflows to avoid failures after Feb 1, 2027.
Services: Microsoft Defender XDR
MC1483511 Major change
A Data Privacy message is now available in Message Center for your organization and can be accessed by Global Admin or Privacy Reader.
Services: Dynamics 365 Apps, Power Platform
MC1523085
GitHub Copilot metrics will be enabled by default in Viva Insights Consumption dashboard; the public preview opt-in setting is being retired for eligible tenants.
Services: Microsoft Viva
MC1523084
Microsoft Defender for Office 365 adds 'Move to Quarantine', enabling admins to relocate suspicious emails from mailboxes to quarantine for safer investigation or remediation.
Services: Microsoft Defender XDR
MC1454973 Major change
Connector and agent governance for Microsoft 365 Copilot will move to a single setting in the admin center, deprecating the setFederatedConnectors CLI toggle for more streamlined management.
Services: Microsoft Copilot (Microsoft 365)
MC1521614 Major change
Microsoft Teams will retire the option for online participants to turn off IntelliFrame during meetings with Teams Rooms using Cloud IntelliFrame, ensuring a unified room view.
Services: Microsoft Teams
MC1483844
Microsoft Copilot now offers GPT-6.1 Sol and Claude Sonnet 5.5 AI models to eligible licensed users across Copilot, Cowork, Studio, Word, Excel, PowerPoint, and Chat.
Services: Microsoft 365 apps, Microsoft Copilot (Microsoft 365)
MC1480870
The SharePoint mobile app for iOS and Android is redesigned around the personalized SharePoint Discover experience for improved browsing, search, news, performance, and dark mode.
Services: SharePoint Online
MC1509787
Certified third-party providers can now integrate synthetic audio/video detection solutions into Teams meetings, enhancing security against AI-generated threats.
Services: Microsoft Teams
MC1469564 Major change
Microsoft Publisher will reach end of life in October 2026; after October 1, users cannot open or edit .pub files in Publisher. Migrate files to Word, PowerPoint, or PDF.
Services: Microsoft 365 apps
MC1518034
Clipchamp is adding an admin policy to control user access to its AI video creation feature, enabling organizations to restrict or allow usage.
Services: Microsoft Clipchamp
MC1515940 Major change
OneDrive Copilot actions will be retired from the File Explorer context menu, simplifying Copilot use; actions remain in OneDrive activity center.
Services: Microsoft OneDrive, Microsoft Copilot (Microsoft 365)
MC1288531 Major change
Eligible Agent Dashboard users in Viva Insights can export de-identified Copilot agent usage data for analytics, requiring at least 50 Copilot licenses. Rollout completes end of November 2026.
Services: Microsoft Viva, Microsoft Copilot (Microsoft 365)
MC1515939
Sending from Aliases is now generally available for Exchange Online, enabling users to send emails from any alias configured on their mailbox.
Services: Exchange Online
MC1515929
GitHub Notifications and Copilot are consolidated into one GitHub app for Teams; legacy GitHub app deprecated by Nov 16, 2026. Users must switch to the new app and update policies.
Services: Microsoft Teams
MC1469565 Major change
EWS retirement in Exchange Online requires migration to Microsoft Graph APIs for archive mailbox access to maintain compliance and data management workflows.
Services: Microsoft Purview
MC1388719
Users will gain control over channel notification settings with three presets and customizable options, improving triaging and reducing noise.
Services: Microsoft Teams
MC1191578 Major change
Starting October 1, 2026, EWS access will be blocked for mailboxes with Exchange Online Kiosk, Microsoft 365 and Office 365 F1/F3 licenses lacking EWS rights to enhance security.
Services: Exchange Online
MC1411727 Major change
Copilot Notebooks now proactively recommend relevant Word, Excel, or PowerPoint artifacts based on notebook context, reducing prompt repetition and accelerating content creation.
Services: Microsoft 365 apps, Microsoft Copilot (Microsoft 365)
MC1511072 Major change
Teams voicemail emails will be sent from organization domains, enabling stronger security and sender-control via SPF/DKIM/DMARC; caller info moves from email 'From' to 'Subject'.
Services: Exchange Online, Microsoft Teams
MC1511071 Major change
Exchange Online is deprecating select properties used in Get-Mailbox -Migration and New-Mailbox -Migration scenarios. Update scripts and workflows for compatibility before November 15, 2026.
Services: Exchange Online
MC1511056 Major change
Copilot Studio chatbot agent management is moving from Teams app to the Copilot Studio web app; Teams app functionality will be phased out Jan-Feb 2027.
Services: Microsoft Teams, Microsoft Copilot (Microsoft 365), Microsoft Copilot (Power Platform)
MC1509799
Microsoft 365 Copilot introduces purpose-built legal plugins in Word and Cowork to help legal professionals with legal document tasks using Microsoft 365 context and third-party legal sources.
Services: Microsoft 365 apps, Microsoft Copilot (Microsoft 365)
MC1509797
Support for Office LTSC 2021 and related products ended on October 13, 2026. Organizations should upgrade to supported versions to maintain security, compliance, and technical support.
Services: Microsoft 365 suite, Microsoft 365 apps, Project for the web
MC1419798 Major change
IntelliFrame people labels in Teams Rooms on Windows identify enrolled in-room participants by name, enhancing clarity for remote attendees via label and contact card display.
Services: Microsoft Teams
MC1506734 Major change
Teams event organizers can soon share videos directly from OneDrive in events using 'Manage what attendees see', improving playback quality and simplifying production.
Services: Microsoft Teams
MC1155311
Viva Engage Community Agent public preview adds tagging, external SharePoint grounding, and analytics. Community admins can manage knowledge sources and settings. GA date to be announced.
Services: Microsoft Viva, Microsoft Copilot (Microsoft 365)
MC1462921
Microsoft Teams for Web introduces a new Call Monitor (Picture-in-Picture) experience, allowing users to access meeting controls while multitasking in other browser tabs.
Services: Microsoft Teams
MC1409304 Major change
Microsoft Teams Facilitator proactively detects knowledge gaps during meetings and shares relevant answers using AI/web search in chat, enhancing productivity. Must be manually enabled by Copilot (Premium) users.
Services: Microsoft Teams, Microsoft Copilot (Microsoft 365)
MC1479514 Major change
File attachments via paperclip and drag-and-drop will be enabled by default in external Teams chats unless admins have already disabled this setting via Teams PowerShell.
Services: Microsoft Teams
MC1269864 Major change
Teams introduces Muted chats and Meeting chats system sections, letting users organize their chats with new dedicated groups that can be enabled or disabled, starting November 2026.
Services: Microsoft Teams
MC1507706
Windows 10 Enterprise LTSC 2021 will stop receiving security updates after January 12, 2027; update to Windows 11 LTSC 2024 or use ESU to stay protected.
Services: Windows
MC1507705
Windows Server 2016 reaches end of updates on January 12, 2027; security updates and Essentials feature support will end. Upgrade to Windows Server 2025 or use ESUs if needed.
Services: Windows
MC1506289
Windows 11 24H2 Home/Pro and Windows 10 Enterprise LTSB 2016 reach end of updates; update devices to newer versions to maintain security.
Services: Windows
MC1506288 Major change
October 2026 Windows security update is now available with fixes for VPN, Azure Virtual Desktop, Storage Spaces Direct, and new ReFS auditing policy controls.
Services: Windows
