Message center announcements
December 1, 2025 – December 7, 2025
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Workspaces in Edge: Upcoming migration to improved architecture
MC1192661 | December 6 – Microsoft Edge Workspaces will migrate saved data from OneDrive/SharePoint to Edge Sync starting mid-February 2026, removing collaboration features. Migration is automatic for all organizations using Workspaces, with no admin action needed. Sync-disabled devices will have local-only new Workspaces. Opt-out requires contacting Microsoft CSS.
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(Updated) Microsoft Defender Threat Intelligence: Convergence with Microsoft Defender and Microsoft Sentinel
MC1192257 | December 5 – Microsoft Defender Threat Intelligence is merging with Microsoft Defender and Microsoft Sentinel by August 1, 2026, offering integrated threat insights and enhanced analytics. Post-transition, MDTI requires an active Defender or Sentinel license. Organizations should prepare by updating licenses, documentation, and transitioning before the deadline.
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(Updated) Microsoft 365 Copilot: Prepare for your meeting with Copilot chat in Outlook mobile
MC1182702 | December 4 – Outlook mobile users with a Microsoft 365 Copilot license on Android and iOS can now prepare for meetings using Copilot chat. The feature rolls out globally from mid-December 2025 to January 2026, is on by default, requires no admin action, and enhances meeting preparation with AI-driven insights.
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(Updated) Microsoft Teams admin center: App centric management for app installation and changes to app setup policies
MC795355 | December 4 – Microsoft Teams will introduce app-centric management for admin app installation, allowing admins to install apps directly for users, groups, or everyone. Existing app setup policies remain but only allow deletions. Rollout starts mid-October 2025 through February 2026 in two phases, with no action needed for Phase 1 tenants.
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Microsoft Purview | Data lifecycle management – Auto archive for Exchange Online
MC1191923 | December 3 – Auto Archiving for Exchange Online automatically moves oldest mailbox items to archive when usage exceeds 96%, preventing mail flow disruption. Enabled by default, it applies to mailboxes with archives, respects “Never Move to Archive” tags, and allows admin adjustments or disabling. Rollout starts January 2026.
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New enrollment dashboard and data deletion controls in Teams Admin Center
MC1191921 | December 3 – A new voice and face enrollment dashboard in Teams Admin Center will provide admins visibility into AI-related user data and allow deletion of enrollment data. Rolling out January 2026, it enhances data management without changing default enrollment or policies. No action is needed to enable it.
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(Updated) Microsoft Teams: Rule-based enablement of Microsoft 365 third-party apps in the Teams admin center
MC1085133 | December 3 – Starting mid-February 2026, admins can manage Microsoft 365 certified third-party apps in Teams via org-wide settings with rule-based controls for app availability. This feature enhances security by allowing customization based on permissions and publishers. The rollout is automatic, with the new control disabled by default.
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Know Your Customer (KYC) required for Teams Phone porting requests
MC1191607 | December 2 – Starting January 2026, Teams Phone porting requires a one-time Know Your Customer (KYC) process via Teams Admin Center. Admins must submit business info and documents for validation before port-in requests. Existing numbers are unaffected. This applies globally and includes all tenants, with role-based access control via Entra ID.
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Update to EWS Access for Kiosk / Frontline Worker Licenses
MC1191578 | December 2 – Starting March 1, 2026, EWS access will be blocked for mailboxes with Exchange Online Kiosk, Microsoft 365/Office 365 F1, and F3 licenses, which currently lack EWS rights. To maintain EWS access, users must be assigned licenses with EWS rights, or EWS requests will return HTTP 403 errors.
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(Updated) Microsoft Loop – Multi-Geo Support for Shared Loop workspaces
MC929025 | December 2 – Microsoft Loop’s multi-geo support for shared workspaces will roll out mid-December 2025 to mid-January 2026. Data storage aligns with tenant geos: M365 group-owned workspaces store data in the group’s geo; non-group-owned in the creator’s preferred location. No preparation is needed from organizations.
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(Updated) Microsoft Defender for Cloud Apps: SIEM agents will retire
MC1077861 | December 2 – Microsoft Defender for Cloud Apps will retire SIEM agents between late December 2025 and early January 2026. No new SIEM agents can be configured after June 19, 2025. Users should transition to unified APIs and SIEM solutions for alerts and activity data to ensure continuity and enhanced capabilities.
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(Updated) Microsoft Teams: Private chat for organizers and presenters in structured meetings, webinars, and town halls
MC1188222 | December 1 – Microsoft Teams will add private chat for organizers, co-organizers, and presenters in structured meetings, webinars, and town halls, unifying backroom chat behavior. Rollout starts February 2026. Admins can enable or disable backroom chat via policy; existing meetings will update accordingly. No compliance issues noted.
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New Microsoft Purview data security posture management experience
MC1191257 | December 1 – Microsoft is launching a new Purview Data Security Posture Management (DSPM) experience by early 2026, enhancing AI observability, posture reporting, and automation with Security Copilot. It integrates third-party data signals, extends risk assessments, and maintains existing policies without requiring admin action.
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(Updated) Remove toggle for Calendar in Teams
MC1129730 | December 1 – The new Microsoft Teams calendar experience will replace the legacy calendar, removing the toggle to switch back. This update rolls out worldwide from mid- to late January 2026, excluding GCC, GCCH, DoD, USSec, and USNat. No admin action is needed; inform users and update documentation accordingly.
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Microsoft 365 admin center: Copilot settings – readiness
MC1192665 | December 6 – Microsoft 365 admin center will introduce Copilot Readiness Packages by mid-January 2026, offering admins centralized, recommended settings, assessments, and guidance to deploy Copilot securely. No automatic changes or licenses are required. Admins can review and apply configurations to simplify setup and enhance governance.
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Microsoft 365 Copilot: Review PDFs using Copilot context menu and AI actions
MC1192664 | December 6 – Microsoft 365 Copilot will enable faster PDF reviews via a context menu in OneDrive web, offering “Explain this” and custom prompt options. It rolls out worldwide from mid-December 2025 to late January 2026. A Copilot license is required; no action is needed now.
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SharePoint: OneDrive and SharePoint – recognize text in PDFs
MC1192663 | December 6 – OneDrive mobile apps will gain built-in OCR to recognize text in scanned PDFs, making them editable and searchable. Rolling out worldwide from mid-December 2025 to late January 2026, the feature is enabled by default and requires no admin action. Users activate it by long-pressing a PDF page.
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(Updated) Microsoft Edge for Business and Microsoft 365 Copilot: Introducing “What’s New” page after major updates
MC1188225 | December 5 – Microsoft Edge for Business will introduce a “What’s New” page that opens automatically after major updates, highlighting new features in Edge and Microsoft 365 Copilot. This rollout starts mid-December 2025, is on by default, and can be disabled by admins via policy. No immediate admin action is required.
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(Updated) Facilitator agent to be generally available in Teams meetings
MC1155927 | December 5 – The Facilitator agent in Teams meetings is now generally available for Microsoft 365 Copilot-licensed users, offering AI-powered agenda tracking, notes, task management, and document creation. It integrates with Planner, Word, Loop, and Teams Rooms, is enabled by users during meetings, and requires no admin action to deploy.
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(Updated) Microsoft Purview compliance portal: Modern eDiscovery additional enhancements
MC1105008 | December 5 – Microsoft Purview’s modern eDiscovery interface gains enhancements like deleting searches and exports, auto-populating custodian fields, advanced indexing, a tenant-level premium toggle, improved analytics, expanded search operators, bulk data source import, and configurable export sizes. Rollout is from June to December 2025.
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(Updated) OneDrive: Simplified file transfer for departing employees
MC1164381 | December 5 – OneDrive updates simplify file management for departing employees with enhanced notifications, improved filtering, bulk file transfer retaining sharing permissions, and consolidated alerts. Rollout starts mid-October 2025, completing by January 2026. Managers automatically gain access to deleted users’ files with retention reminders. No admin action needed before rollout.
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(Updated) Microsoft Viva: Transition to VFAM-based exclusion management
MC1188597 | December 5 – Starting January 2026, Viva Insights and Copilot Analytics exclusions will be managed via Viva Feature Access Management (VFAM) policies instead of list-based methods. Existing exclusions will migrate automatically, with no admin action needed. Admins should prepare by informing teams and reviewing settings once VFAM is live.
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(Updated) Microsoft Outlook: New third-party enriched properties available for customizing profile cards
MC1158902 | December 5 – Microsoft is adding new customizable properties—Role, Division, Employee ID, Employee Number, and Cost Center—to Microsoft 365 profile cards, sourced from Microsoft Entra ID or external HR systems via Microsoft Graph connectors. Rollout begins mid-December 2025; admins must enable these properties in the Microsoft 365 admin center.
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(Updated) Microsoft Purview | Information Protection: Auto-labeling for Microsoft Azure Storage and Azure SQL
MC933531 | December 5 – Auto-labeling for Microsoft Azure Storage and Azure SQL has paused its GA release. It allows extending sensitivity labels to various Azure and non-M365 data sources via auto-labeling policies. Public preview was planned for July 2025. Admins can configure labeling by default; some older labeling methods will be deprecated.
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Microsoft Purview | Compliance Manager – AI Powered Regulatory Templates
MC1192260 | December 5 – Microsoft Purview Compliance Manager will introduce AI Powered Regulatory Templates to convert regulatory PDFs into actionable controls, simplifying compliance assessments. Public preview starts mid-November 2025; general availability begins mid-January 2026. The feature is additive, requires no action to enable, and supports multi-cloud compliance automation.
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Microsoft 365 Copilot: RSVP to meetings directly in Copilot chat
MC1192258 | December 5 – Microsoft 365 Copilot chat will allow users to RSVP to meetings directly (Accept, Decline, Tentative, Follow, Remove canceled) starting early December 2025. This feature is on by default for licensed users, requires no admin action, and simplifies meeting management within Copilot chat.
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Microsoft Purview | Data Loss Prevention- Admin units support for Microsoft SharePoint Online
MC1192256 | December 5 – Microsoft Purview Data Loss Prevention will support assigning SharePoint Online sites to administrative units, allowing DLP policies to apply only within those units. This feature, rolling out mid to late December 2025, requires no action before rollout and enables more granular policy management for admins.
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Microsoft Defender for Endpoint: New Microsoft Secure Score recommendations
MC1192254 | December 5 – New Microsoft Secure Score recommendations for Microsoft Defender for Endpoint will roll out in public preview by the end of December 2025, helping admins improve security by blocking common attacks. Admins should review and implement these recommendations, such as disabling NTLM authentication, to enhance endpoint protection.
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Microsoft Teams: Network Device Interface (NDI) automatic binaries update for macOS
MC1192253 | December 5 – Microsoft Teams on macOS will automatically install and update Network Device Interface (NDI) binaries starting January 2026, enabling seamless broadcasting of audio and video streams without manual setup. This feature is enabled by default, affects all macOS users, and requires no admin or user action.
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External authentication methods (EAM) – Public preview update
MC1192252 | December 5 – External Authentication Methods (EAM) Public Preview will enforce registration starting December 8, 2025. Existing users are pre-registered; new users after December 2, 2026, must complete in-line setup. Admins can register users. Organizations should prepare by communicating changes and reviewing configurations.
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Autocorrect in Microsoft Teams compose
MC1192251 | December 5 – Autocorrect will be added to Microsoft Teams compose for Windows and Mac, automatically correcting common misspellings by default starting December 2025 (Targeted Release) and January-February 2026 (General Availability). Users can disable it in Settings. No admin action is needed; update documentation and inform helpdesk.
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(Updated) Decoupling admin controls for agents on/off from Researcher and Analyst
MC1185442 | December 5 – Researcher and Analyst remain available to all M365 Copilot license users even if Copilot agents are disabled in Agents Settings. This update, rolling out from December 15, 2025, affects IT admins managing agent access and requires reviewing access controls and updating documentation accordingly.
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(Updated) Rate my call feedback experience update in Microsoft Teams
MC1183608 | December 4 – Microsoft Teams will update the Rate My Call survey to a single-screen thumbs up/down system with problem tokens and comments, rolling out January 2026. Feedback ratings in the Call Quality Dashboard will change, possibly increasing poor feedback metrics without indicating service decline. Admins should prepare accordingly.
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(Updated) Microsoft Viva Engage: Smarter delivery of Community Announcement notifications
MC1143276 | December 4 – Microsoft Viva Engage is updating Community Announcement notifications to use a smarter, behavior-based delivery system. Users will receive notifications through their most engaged channel first, with a secondary channel if unopened. Immediate email notifications remain available for urgent announcements. Rollout begins mid-September 2025, completing by January 2026.
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Secure Boot AMA: Ask Microsoft Anything on December 10
MC1192217 | December 4 – Join us December 10, 2025, at 8:00 AM PST for a live Ask Microsoft Anything (AMA) session focused on updating Secure Boot certificates on your Windows devices before they expire in June 2026. This event gives IT admins the chance to ask questions and get expert guidance on Secure Boot configuration, update scenarios, inventorying and preparing your…
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(Updated) Microsoft Outlook Mobile: Filter out declined meetings for a cleaner calendar view
MC1187790 | December 4 – Outlook Mobile will add a setting to hide declined meetings, aligning with New Outlook and Outlook for the Web. This feature, rolling out January 2026, offers a cleaner calendar view without admin changes. No compliance issues identified; no admin action required.
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(Updated) Book a workspace when creating an event
MC1186361 | December 4 – Users can now book workspaces directly from the calendar event location field starting mid-December 2025. The iOS long-press booking method will be retired. This feature requires workspace booking enabled by admins and users, is on by default, and needs no admin action to prepare.
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Viva Engage: Update storyline cover photos in Teams for iOS
MC1184648 | December 4 – Users will soon be able to update their Viva Engage storyline cover photos directly from the Teams iOS app. This feature, already on other platforms, will roll out worldwide in early December 2025, is enabled by default, requires no admin action, and has no compliance concerns.
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(Updated) Updated compose toolbar and actions in Outlook Mobile
MC1183298 | December 4 – Outlook Mobile’s compose toolbar will be customizable, allowing users to reorder actions for improved productivity. The feature rolls out globally from early December 2025 to January 2026, enabled by default for all users. No action is required, but updating helpdesk or documentation is recommended.
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(Updated) New toolbar customization for multi-select in Outlook Mobile
MC1183297 | December 4 – Outlook Mobile’s multi-select toolbar will allow users to customize the order and placement of actions like Move to Other, Report Junk, Ignore, Pin, and Snooze for multiple emails. Rollout starts mid-December 2025, completing by late January 2026, with no admin action required.
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(Updated) New “Prepare” button added to the “Up Next” card for Microsoft 365 Copilot users
MC1187395 | December 4 – Microsoft 365 Copilot users will see a new “Prepare” button on the “Up Next” card replacing “Join” up to 5 minutes before meetings, providing quick access to Copilot’s meeting prep tools. Rollout begins January 2026, enabled by default for Premium license users, with no admin action needed.
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(Updated) New Dedicated Copilot Chat Button in Outlook for Android
MC1185099 | December 4 – Outlook for Android will have a new, separate Copilot Chat button for users with a M365 Copilot license, improving access and clarity. The rollout starts and completes in early December 2025. No functionality changes or admin actions are needed, but helpdesk and documentation updates are recommended.
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New Windows Autopatch reports on CVEs
MC1192178 | December 4 – A new Windows Autopatch report empowers your organization to prioritize update deployment,demonstratecompliance, andmaintaina robustsecurity posture. The Common Vulnerabilities and Exposures (CVEs) report joins your other Windows quality update reports right in the Microsoft Intune admin center. Use it to view Windows CVEs addressed by recent quality updates and follow links to remediation documentation and device-level vulnerability…
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(Updated) Microsoft Teams: Shorter meeting URLs
MC772556 | December 4 – Microsoft Teams is shortening meeting URLs by removing parameters to improve usability and security. New links will expire 60 days after scheduled meetings or 8 hours after Meet Now creation. Rollout starts mid-February 2025 for Targeted Release and January 2026 for General Availability, with no admin action needed.
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Microsoft 365 Copilot: GPT-5 Mode selector adds Auto, Instant, and Thinking modes
MC1192003 | December 4 – Microsoft 365 Copilot now defaults to GPT-5 with a mode selector offering Auto, Quick response, and Think deeper options. The rollout begins December 3, 2025, affecting all users with no admin changes needed. User mode choices persist across chats and the feature is enabled by default.
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Updates available for Microsoft 365 Apps for Current Channel
MC1191984 | December 4 – We’ve released updates to the following update channel for Microsoft 365 Apps: Current Channel
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(Updated) Microsoft Copilot (Microsoft 365): Use Copilot with OneDrive files in File Explorer and Activity Center
MC1155433 | December 4 – Microsoft 365 Copilot is now integrated into Windows File Explorer and OneDrive Activity Center, allowing users to summarize documents, generate FAQs, compare files, and ask questions about OneDrive files. The feature is on by default, requires no admin setup, and rollout completed by December 2025.
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Microsoft Excel: Insert Data from Image retires starting July 2026
MC1191944 | December 3 – The Insert Data from Image feature in Excel for Windows Semi-Annual Enterprise Channel will retire in July 2026 with Version 2602. It remains until September 2026 in Version 2508. An enhanced version with Copilot chat is being developed for other channels.
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Microsoft Entra ID: Enhance protection of the authentication experience by blocking external script injection
MC1191924 | December 3 – Microsoft Entra ID will enhance authentication security by enforcing a Content Security Policy that blocks external script injection, allowing only trusted Microsoft scripts. This rollout begins mid-October 2026, affecting browser-based sign-ins on login.microsoftonline.com, with no impact on Entra External ID tenants.
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(Updated) Microsoft Outlook: Automatically display automapped calendars
MC906502 | December 3 – Starting early 2026, users will automatically see automapped calendars when switching between classic and new Outlook for Windows. The rollout requires no admin action, is enabled by default, and aims to improve calendar access. Notifications and documentation updates are recommended for users.
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Improved People Skills Admin configuration
MC1191920 | December 3 – Three new admin features for managing People Skills in Microsoft 365 include turning off user experiences, configuring settings via the Admin Center without PowerShell, and importing custom skills libraries from local devices. These enhance privacy, deployment flexibility, and ease of management, rolling out worldwide by mid-December 2025.
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Microsoft Purview | Information Protection – Email attachment preview in Activity explorer
MC1191918 | December 3 – Microsoft Purview Information Protection will enable admins to preview email attachments flagged for sensitive data directly in Activity explorer for Exchange Online, improving incident investigation without downloading emails. The feature rolls out from December 2025 to January 2026, is enabled by default, and requires no action.
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Message preview for channels, mentions, and reactions notifications
MC1191916 | December 3 – Microsoft Teams will add message previews to channel, mention, and reaction notifications on Windows, Mac, and web starting mid-December 2025. Users can disable previews via notification settings. No admin action or policy changes are needed; the feature activates with client updates.
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Microsoft Viva: Copilot Dashboard – Broader access to M365 Copilot Chat insights
MC1191915 | December 3 – Microsoft 365 Copilot Chat Adoption Metrics will roll out by January 2026 to tenants with at least one Copilot license, enabling default analytics in the Copilot Dashboard. It provides insights on usage trends, adoption by group, retention, app-level breakdowns, and filtering, with admin controls for access and exclusions.
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(Updated) Microsoft Loop – Require Existing Microsoft 365 Group for New Loop workspaces
MC929022 | December 3 – Starting March 2026, admins can require new Microsoft Loop workspaces to be connected to existing Microsoft 365 Groups for management, similar to SharePoint Team sites. This may affect scenarios like automatic Teams meeting content aggregation. No preparation is needed; the feature will roll out automatically.
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(Updated) Microsoft 365 Copilot: Content Sources in Copilot Chat
MC1127230 | December 3 – Microsoft 365 Copilot now lets licensed users select specific content sources for Copilot Chat responses, enhancing relevance and control. The feature rolls out globally from mid to late December 2025, is enabled by default, requires no admin action, and does not affect existing policies or compliance.
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Microsoft Purview | Data Loss Prevention: Restrict Access action for semantic models in Microsoft Fabric (preview)
MC937920 | December 3 – Microsoft Purview DLP now allows restricting access to Microsoft Fabric semantic models and lakehouses. Public preview for semantic models began November 2024; lakehouse preview starts April 2025. General availability is planned for June 2026. Admins can configure DLP policies to block or restrict access to sensitive data automatically.
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(Updated) Microsoft 365 admin center – Usage reports: Agent usage (preview)
MC1148545 | December 3 – A new preview usage report for Microsoft 365 Copilot Chat agents is available in the admin center, showing active users, agents, usage details, and segmentation by license and creator type. It covers up to 30 days from August 19, 2025, and will roll out fully by late December 2025.
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(Updated) Microsoft 365 Copilot: Q&A in Read Aloud enables real-time voice interactions
MC1183010 | December 3 – Microsoft 365 Copilot’s Read Aloud will enable real-time voice Q&A for en-US users starting January 2026. Copilot subscribers get an interactive experience, while others keep the classic version. No admin action is needed, and users can toggle the feature on or off.
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(Updated) Microsoft 365 Copilot: Podcast voice interactions make audio experiences conversational
MC1183009 | December 3 – Microsoft 365 Copilot will enable real-time voice interactions in podcasts starting January 2026 (en-US only initially). This feature allows users to engage in dynamic conversations, ask questions, and explore document-based audio content interactively. It will be on by default for eligible users with no admin action needed.
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(Updated) Microsoft 365 Copilot: Session persistence enhancement for Copilot chat
MC1174856 | December 3 – Microsoft 365 Copilot chat now preserves conversations by creating a session entry in the navigation pane when a prompt is submitted, allowing users to return without losing progress. This update rolls out December 2025 to January 2026 across environments, requires no admin action, and improves session reliability.
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(Updated) Microsoft 365 Copilot: Graph APIs for agent and app management
MC1173195 | December 3 – Microsoft 365 will release new Graph APIs in mid-January 2026 for admins to programmatically manage Copilot agents and apps, enabling automated reporting and integration without UI changes. These APIs require no extra licenses and support detailed inventory and metadata retrieval.
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(Updated) Retirement of Visio Data Visualizer Add-in for Microsoft Excel
MC1182535 | December 3 – The Visio Data Visualizer add-in for Excel will be removed from the add-in store, templates, and ribbon in January 2026, with its service shutting down on March 2, 2026. Users should save diagrams as Visio (.vsdx) files before then; no admin action is required.
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(Updated) Consult and merge into a meeting or group call via Dual-Tone Multi-Frequency (DTMF)
MC1183611 | December 3 – Microsoft Teams will enable consulting and merging PSTN callers into meetings via DTMF navigation through IVR systems. Rolling out February 2026, this feature requires no admin action, is enabled by default, and allows users to dial and merge external participants seamlessly during meetings.
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(Updated) Build SharePoint automations with Workflows—now aligned with the Teams experience
MC1138798 | December 3 – SharePoint introduces a new Workflows experience aligned with Teams, powered by Power Automate, simplifying automation across Microsoft 365. It features a unified menu, streamlined interface, natural language flow creation, and a redesigned template library. Rollout begins January 2026 with no admin action required; existing workflows remain unaffected.
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Dynamics 365 Contact Center – Analyze adherence history to optimize workforce planning
MC1189137 | December 3 – We are announcing the ability to analyze adherence history to optimize workforce planning in Dynamics 365 Contact Center. This feature will reach general availability on January 30, 2026. How does this affect me? The Adherence History Report will provide a complete view of customer service representatives’ historical adherence to scheduled tasks and activities. This feature will help to support supervisors to analyze patterns, identify gaps, and improve workforce…
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Microsoft Dataverse, Dynamics 365 Apps – Storage capacity and entitlements update
MC1181915 | December 3 – Starting December 1, 2025, we are increasing default storage for Dataverse (per tenant entitlements) across all Dynamics 365 apps (excluding Business Central) and Power Platform. Dataverse and storage for Dynamics 365 enterprise resource planning (ERP) applications (Finance, Supply Chain, Commerce, Project Operations, Human Resources) will now be combined into a shared pool per tenant.How does this affect me?The updated storage entitlements will automatically appear in…
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Dynamics 365 Contact Center – Update default Messaging Queues assignment strategy – Least Active
MC1181931 | December 3 – We are announcing the ability to update the default Message Queues assignment strategy to “least active” in Dynamics 365 Contact Center. This feature will reach general availability on February 6, 2026. How does this affect me? This feature sets the “least active” assignment method as the default option for messaging queues. This method assigns work items to the customer support representative who is least active and has been inactive for the longest time. For…
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(Updated) Rewrite with Microsoft 365 Copilot Chat coming soon to Edge for Business users
MC1146821 | December 3 – Microsoft Edge for Business will introduce the Rewrite feature powered by Microsoft 365 Copilot Chat in late January 2026. Enabled by default, it allows users to draft and rephrase text via right-click. Admins can control it with the InlineComposeEnabled policy, and DLP restrictions may block its use on some content.
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(Updated) Microsoft Edge: Microsoft 365 Copilot will support summarization and contextual grounding
MC1187682 | December 3 – Microsoft Edge for Business will support Microsoft 365 Copilot Chat for summarization and contextual grounding across browser tabs, Microsoft 365 documents, and YouTube videos starting late January 2026. The feature is off by default, respects DLP and policy settings, and requires users signed in with Entra ID and Copilot access.
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Microsoft Secure Score: New recommendations for Microsoft Defender for Endpoint
MC1191616 | December 3 – New Microsoft Secure Score recommendations for Microsoft Defender for Endpoint will roll out from late November to mid-December 2025, adding actions like disabling Remote Registry Service on Windows. Available to Microsoft 365 E5 or Defender for Endpoint Plan 2 customers, admins should review and implement these to enhance security.
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Microsoft Defender for Office 365: Auto-remediation of malicious similarity clusters in AIR
MC1191613 | December 3 – Microsoft Defender for Office 365 expands AIR auto-remediation to malicious similarity clusters, automating approval of remediation actions without manual intervention. Rolling out worldwide mid to late December 2025, this feature reduces SOC workload and speeds threat response. It’s off by default and can be enabled in the Defender portal.
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Interpreter agent in Teams calls
MC1191612 | December 3 – Microsoft Teams will expand the Interpreter agent to support real-time speech-to-speech interpretation in calls starting January 2026 for users with a Microsoft 365 Copilot license. Users can choose languages, adjust audio balance, and select voice options. It works best in structured conversations and requires policy configuration.
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(Updated) Microsoft Purview | Insider Risk Management: IRM alerts in Microsoft Defender XDR
MC961761 | December 2 – Microsoft Purview Insider Risk Management (IRM) alerts will integrate into Microsoft Defender XDR’s unified alert queue, Advanced Hunting, Graph API, and Microsoft Sentinel. Rolling out from January to September 2025, admins must enable data sharing and assign permissions. IRM data supports enhanced investigation and external integrations.
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Flexible layout for Teams meetings with resizable divider
MC1190199 | December 2 – Teams meetings will feature a new resizable divider allowing users to adjust the space between shared content and participant videos, swap their positions, and personalize layouts. This feature, enabled by default, rolls out from January to March 2026 for all Windows and Mac desktop users worldwide and GCC.
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Microsoft Purview | Data Lifecycle Management – Introducing secure priority cleanup workflows for OneDrive/SharePoint
MC1183292 | December 2 – Microsoft Purview Data Lifecycle Management now lets admins create Priority Cleanup policies to delete OneDrive and SharePoint content before retention or legal hold expires, with simulation, audit, and review features. Requires two admins with specific roles and explicit policy enforcement. Rolling out late 2025 to early 2026.
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Windows news you can use: November 2025
MC1191556 | December 2 – November’s edition of Windows news you can use recaps the new Windows capabilities announced at Microsoft Ignite so your organization and IT team can catch up and dive deeper into the details. Discover upcoming events to help you keep your deployment and device management projects moving. Find a summary of important lifecycle…
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(Updated) Microsoft Teams: Automatically set work location by connecting to a Wi-Fi network
MC1081568 | December 2 – Microsoft Teams will soon auto-set users’ work location by detecting their connection to organizational Wi-Fi or peripherals, improving coordination. This opt-in feature rolls out worldwide from February 2026, requires admin configuration, respects working hours, and applies to Teams on Windows and Mac desktops.
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(Updated) New Feature: Account Manager in Outlook for Windows
MC1129718 | December 2 – Outlook for Windows will introduce a new Account Manager by March 2026, displaying profile pictures, enabling account switching, and providing quick access to account details. The feature is on by default, requires no admin action, and aims to enhance user productivity with a familiar experience.
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(Updated) PowerPoint adds AI-powered image editing with “Designer editor”
MC1187787 | December 2 – PowerPoint’s new AI-powered Designer editor, rolling out worldwide from mid-December 2025, enables seamless in-app image editing with features like generative erase/move, text editing, background removal, and auto-enhance. It’s enabled by default for all Microsoft 365 users, with admin controls available.
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Viva Engage: Update storyline cover photos in Teams for iOS.
MC1191346 | December 1 – Viva Engage community admins can soon update cover photos directly from the Teams iOS app, aligning with existing capabilities on other platforms. This feature, enabled by default without admin setup, will roll out worldwide from late December 2025 to early January 2026. No compliance issues identified.
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(Updated) Microsoft 365 Copilot: Use Copilot with OneDrive files in macOS activity center
MC1187835 | December 1 – Microsoft 365 Copilot is now accessible from the OneDrive activity center on macOS, allowing users with a Copilot license to summarize documents, generate FAQs, and ask questions directly from files. The rollout began mid-November 2025 and will complete by mid-December 2025, with the feature enabled by default.
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Microsoft Planner: Support for Microsoft Information Protection (MIP) content sensitivity labels
MC1191342 | December 1 – Microsoft Planner will support Microsoft Information Protection (MIP) content sensitivity labels by December 15, 2025, enabling encryption, blocking copy/print/export, and enforcing read-only access. This enhances data protection and compliance, complements existing container-level labels, and requires no changes to current labels but recommends reviewing Purview settings and updating training.
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Microsoft Teams: Network Device Interface (NDI) bandwidth increase
MC1191341 | December 1 – Microsoft Teams will increase bandwidth for NDI feeds in meetings, enabling up to eight distinct 1080p streams without pinning or spotlighting participants. This automatic enhancement requires no admin changes and will roll out from early to mid-January 2026 for Windows and Mac desktop users.
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(Updated) Microsoft Viva Insights: New prompt categories in the Microsoft Copilot Dashboard
MC1092459 | December 1 – Microsoft Viva Insights will add new prompt categories—Ask and find, Catch up, Draft and brainstorm, and Other—to the Microsoft Copilot Dashboard by late 2025. These will appear in Adoption and Impact tabs with no admin action needed. Organizations should prepare by notifying users and updating documentation.
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(Updated) Microsoft Copilot Chat: AI disclaimer updates
MC1181766 | December 1 – Microsoft Copilot Chat’s AI disclaimer will be updated with admin controls for customization, including bold text and a custom URL. Rollout starts early December 2025, completing by mid-December for most and mid-January 2026 for GCC High & DoD. Admins should review and prepare accordingly.
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(Updated) Microsoft Graph API will include usage metrics for Microsoft Copilot for Microsoft 365
MC877369 | December 1 – Microsoft Graph API will soon include Microsoft Copilot for Microsoft 365 usage metrics, enabling customized reporting and analytics. Public preview starts September 2024; general availability is mid-November to mid-December 2025. A Copilot license is required, and no admin action is needed before rollout.
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The November 2025 Windows non-security preview update is now available
MC1191307 | December 1 – The November 2025 non-security preview update is now available for Windows 11, versions 25H2 and 24H2. Information about the contents of this update is available from the release notes, which are accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see…
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Power Platform inventory to include agents, apps, and workflows from Microsoft 365 Copilot, agent flows, and cloud flows
MC1191203 | December 1 – We’ve expanded Power Platform inventory (Public Preview) to include four new resource types, giving admins a single view of resources across Power Platform and Microsoft 365 Copilot. Starting December 1, 2025, and completing worldwide by December 20, 2025, inventory will include: Agents from Agent Builder (Copilot Studio lite) in Microsoft 365 Copilot Workflows from the Workflows agent in Microsoft 365 Copilot Agent flows from Copilot Studio Cloud…
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Action Required: Update active Exchange Web Services Applications
MC1191242 | December 1 – Microsoft will block Exchange Web Services (EWS) in Exchange Online starting October 1, 2026. Tenants with active EWS apps must migrate to Microsoft Graph, Power Platform, or Copilot Declarative Agents. Review apps, enhance security with MFA, prioritize modernization, and disable EWS when no longer needed.
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(Updated) Microsoft Purview | Information Protection: SharePoint Online library permissions extend to downloaded files
MC937935 | December 1 – SharePoint Online library owners can soon apply sensitivity labels at the library level, automatically protecting all files and extending permissions to downloaded documents. This opt-in feature, rolling out from November 2024 to October 2025, enables real-time rights evaluation and streamlined access revocation for users.
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(Updated) Introducing simplified admin controls to manage external collaboration in Teams admin center
MC1183006 | December 1 – Microsoft Teams is introducing a simplified external collaboration admin experience with three modes—Open, Controlled, and Custom—available in the Teams admin center. Public preview starts mid-November 2025; general availability begins mid-February 2026. Existing settings remain unless changed by admins. No immediate action required.
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Dynamics 365 Project Operations – Edit per diem transaction date, exchange rate in expense management
MC1191197 | December 1 – We are announcing the ability to edit transaction dates and exchange rates for per diem expenses to improve flexibility and accuracy in expense reporting, in Dynamics 365 Project Operations. This feature will reach general availability on December 31, 2025.How does this affect me?This capability will enable users to manually edit the transaction date for per diem expenses. The modified information will be utilized in subsequent expense-related calculations and…
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Dynamics 365 Customer Service – Configure timeout rules override in SLA-based automatic actions
MC1191196 | December 1 – We are announcing the ability to configure timeout rules override in SLA-based automatic actions in Dynamics 365 Customer Service. This feature will reach general availability on December 31, 2025. How does this affect me? This feature enables customer service representatives to override timeout rules in automatic actions based on SLAs. In scenarios where a customer service representative is on leave, needs more response time, or transfers a conversation to a…
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