Message center announcements
September 8, 2025 – September 14, 2025
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Microsoft 365 Copilot Apps installation on devices with Microsoft 365 Apps
MC1152323 | September 12 – Starting October 2025, Microsoft will automatically install the Microsoft 365 Copilot app on Windows devices with Microsoft 365 desktop apps, except in the EEA. The app appears in the Start menu, enabled by default, with admins able to opt out and prepare users accordingly.
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New filtering capability for SharePoint Embedded containers using sensitivity labels
MC1152318 | September 12 – SharePoint Embedded will introduce a new default filtering feature by sensitivity labels for containers, rolling out worldwide from late October to November 2025. Admins can better organize containers without impacting user workflows. Organizations should review label taxonomies and update documentation accordingly.
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30-Day Reminder: Windows 10, version 22H2 will reach end of servicing on October 14, 2025
MC1152188 | September 12 – On October 14, 2025, Windows 10, version 22H2 (Home, Pro, Enterprise, View more
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Update: Microsoft 365 and Microsoft Teams: Unified management of Teams apps in Teams, Outlook, and the Microsoft 365 app
MC796790 | September 12 – Microsoft is unifying app and agent availability management across Teams, Outlook, and Microsoft 365 admin centers to eliminate mismatches. The rollout starts late September 2025 in three phases, synchronizing settings and providing a consolidated management experience. No immediate action is required, but reviewing current settings is recommended.
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(Updated) Important Update: Teams Meeting Join URL Validation
MC1120871 | September 11 – Microsoft Teams will validate meeting join URLs starting September 30, 2025, to prevent altered or rewritten links from blocking access, affecting users of the old Teams calendar app. The new calendar app redirects safely without blocking. No admin action is needed for Safe Links users; third-party URL rewriting must exclude Teams links.
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(Updated) Remove toggle for Calendar in Teams
MC1129730 | September 11 – Microsoft Teams is removing the toggle for the legacy calendar, making the new Microsoft 365 calendar the default. This update, launching from September to December 2025 across environments, requires no admin action but users should be informed and documentation updated accordingly.
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(Updated) Action required: Update Exchange Server and configure the dedicated Exchange hybrid application
MC1085578 | September 11 – By October 2025, Exchange Online will stop supporting shared service principals for rich coexistence features in hybrid deployments. Administrators must update Exchange Server to supported versions, configure the dedicated Exchange hybrid application in Entra ID, and enable it to avoid disruptions in calendar, MailTips, and profile picture sharing. Temporary feature blocks start September 16, 2025.
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(Updated) Feature retirement: deploy Shifts to your frontline teams at scale in Teams Admin Center
MC1127233 | September 10 – The “Deploy Shifts to your frontline teams at scale” feature in Teams Admin Center will retire by September 25, 2025. After this, admins must manage Shifts via the Teams web or desktop apps. No action is required; the change happens automatically.
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Hardening changes for Windows Server Update Services in Windows Server 2025
MC1150625 | September 9 – Important hardening changes are here. Starting with the September 2025 security update, WSUS running on Windows Server 2025 is removing dependencies on old code that’s no longer supported. This means that Windows operating systems (OS) that reached the end of their lifecycle will no longer qualify to receive extended security updates (ESU), unless you take additional action. Short-term and long-term next steps are available for Windows Server 2012 and Windows Server 2012 R2 that still need…
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Manager insights now in Viva Insights web app, with new team view for Copilot Dashboard
MC1136039 | September 9 – Manager insights in Viva Insights will move to the Viva Insights web app with a new team-scoped Copilot Dashboard, additional reports, delegation, and analyst-published reports. This replaces the Teams app manager features starting mid-September 2025. No admin action is required, but settings can be customized.
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The September 2025 Windows security update is now available
MC1150558 | September 9 – The September 2025 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are easily accessible from theWindows 11 andWindows 10…
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Certificate-based authentication changes following installation of Windows updates released September 9, 2025
MC1150557 | September 9 – Windows updates released September 9, 2025 and later, introduce security hardening changes to certificate mapping requirements in Windows Servers. The is the final milestone of a rollout that has gradually been taking place since 2023. IT administrators need to take action to ensure normal operations in accordance with the new certificate mapping criteria, and install the September 9, 2025 updates.For full details, see View more
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Teams Admin Center: Control External Access by Domain for Specific Users and Groups
MC1150123 | September 8 – Microsoft Teams will enable admins to assign custom external access policies by user or group, allowing specific control over which external domains they can interact with. This feature, available from September 2025, supports five policy options and will be manageable via PowerShell initially, then through the Teams admin center UI.
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Expanding Microsoft 365 Copilot Search admin experience to AI admin role
MC1152322 | September 12 – Microsoft 365 is introducing an AI Admin Role for Copilot Search, enabling designated admins to manage AI-powered search across tenants. Rolling out worldwide mid-September 2025, it’s on by default for eligible licenses. Admin access is controlled via Microsoft Entra ID, enhancing governance and compliance monitoring.
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(Teams Premium) Customize the screen in Teams Town hall through “Manage what attendees see”
MC1152321 | September 12 – Teams Premium will introduce “Manage what attendees see” for town halls, allowing organizers to customize layouts, backgrounds, theme colors, and name tags. Available from late October 2025, it applies to Windows, Mac, web, and Teams Rooms, enhancing attendee experience without requiring admin action before rollout.
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Microsoft Defender for Office 365: Enhanced email entity page experience
MC1152320 | September 12 – Microsoft Defender for Office 365 will streamline the email entity page by opening emails in a shared tab with retained navigation and unique URLs. Rolling out from September to November 2025, this affects licensed security analysts and administrators, requiring no user action but may need helpdesk notification.
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eSignature: Free text field support in Word
MC1152319 | September 12 – Microsoft Word’s eSignature feature will support free text fields starting October 2025, allowing users to collect custom signer information. This feature is on by default for tenants with eSignature enabled, requires no admin changes, and has no impact unless eSignature is active.
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Membership management of SharePoint Embedded containers through PowerShell
MC1152317 | September 12 – New PowerShell cmdlets for managing SharePoint Embedded container membership will roll out worldwide from late September to October 2025. Administrators can add, update, or remove users via PowerShell without using the SharePoint Admin Center. Update your PowerShell module and inform your team to prepare.
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Update Principal owner of a SharePoint Embedded user-owned container through SPAC and PowerShell
MC1152315 | September 12 – SharePoint Embedded will allow admins to update the principal owner of user-owned containers via the SharePoint Admin Center or PowerShell starting late September 2025. This helps manage ownership during user or team changes, requires no opt-in on SPAC, and needs PowerShell updates. No compliance issues noted.
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(Updated) New SharePoint assessment and dashboard to streamline site governance and Copilot readiness
MC1148538 | September 12 – The updated SharePoint Content Management Assessment (CMA) launches October 2025, offering admins a unified dashboard to evaluate site health, permissions, and lifecycle readiness. It automates governance tasks, enhances Copilot preparation, requires specific licenses, and stores data per SharePoint residency rules.
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30-Day Reminder: Windows 11, version 22H2 (Enterprise & Education editions) will reach end of servicing on October 14
MC1152187 | September 12 – On October 14, 2025, Windows 11, version 22H2 (Enterprise,Education, andIoT…
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Microsoft Viva : News AI audio briefing in Connections Mobile
MC1150671 | September 12 – Microsoft Viva Connections mobile will introduce an AI audio briefing feature providing summaries of top news with playback controls. Available mid-September to November 2025, it requires a Microsoft 365 Copilot license, is on by default, and needs no user configuration.
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(Updated) Microsoft Entra: Cross-cloud synchronization now available
MC1124558 | September 12 – Microsoft Entra introduces cross-cloud synchronization in public preview, enabling automated user lifecycle management across Microsoft commercial, US Government, and China clouds. It is opt-in, requires specific licenses, admin enablement, and supports configuration via the Entra portal, PowerShell, and Microsoft Graph API. General availability is late September to mid-October 2025.
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(Updated) Outlook Mobile : Copilot Chat overlay coming to iOS and Android
MC1138239 | September 12 – Outlook Mobile will roll out a context-aware Copilot Chat overlay for iOS and Android from late September 2025 to early March 2026. It enables users with Microsoft 365 Copilot licenses to interact with AI while using email, calendar, and contacts, providing personalized, on-screen contextual assistance. No action is needed.
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(Updated) Microsoft Copilot in PowerPoint: Reference Loop components when creating presentations
MC1138789 | September 12 – Microsoft 365 Copilot in PowerPoint will enable referencing Microsoft Loop components in presentations starting mid-September 2025. This feature, available on Windows, Mac, and web, requires no admin setup and improves collaboration by integrating Loop content seamlessly. Users should review configurations and notify teams.
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(Updated) Microsoft Purview | DLP – Enable Diagnostics for Compliance Admin, Security Admin, and Org Management roles
MC1143283 | September 12 – Microsoft Purview Diagnostics access is expanding from Global Administrators to include Compliance, Security, and Organization Management roles. Rollout starts October 2025 (preview) and February 2026 (general availability). This enhances diagnostic capabilities without needing Global Admin rights and is enabled by default. No preparation needed.
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(Updated) Data Loss Prevention: Decoupling policy tips and email notifications for SharePoint and OneDrive
MC791114 | September 12 – Microsoft Purview Data Loss Prevention will decouple policy tips and user email notifications, allowing admins to configure them independently. Rollout begins late June 2025 (preview) and late December 2025 (general availability). Configuration will be via PowerShell or Purview DLP with a new -NotifyUserType parameter. No pre-rollout action needed.
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(Updated) Microsoft Whiteboard: Azure to OneDrive migration progress update
MC1146823 | September 12 – Microsoft Whiteboard storage is migrating from Azure to OneDrive, enhancing security and compliance. Migration began in February 2024, completed tenant-wide by August 2025, with Azure storage deprecated by February 2026. Users must complete migration by then to retain access; admins can monitor progress via PowerShell.
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Hard delete action now removes calendar entries from malicious meeting invite emails
MC1151684 | September 11 – Hard Delete now removes calendar entries from malicious meeting invites, closing a security gap by fully eradicating threats from inboxes and calendars. This update rolls out worldwide in September 2025 and GCC regions in October 2025, is on by default, and requires no user action.
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Microsoft Defender for Identity | Detections improvements to reduce noise and improve accuracy
MC1151683 | September 11 – Microsoft Defender for Identity will update several detections from late September to mid-October 2025 to reduce false positives and improve accuracy, lowering alert noise without requiring configuration changes. Admins should review alert volumes post-rollout and inform their security teams accordingly.
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Updated Microsoft Defender Antivirus AVSignatureDue policy limit
MC1151677 | September 11 – Starting September 2025, Microsoft Defender Antivirus will require the AVSignatureDue policy minimum to be 2 days (up from 1 day) to prevent false alerts. Organizations with settings below 2 days should update their configuration before rollout completes in mid-October 2025.
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(Updated) Quarantine experience update in Microsoft Defender and Exchange Online: Restore temporarily deleted items
MC1134736 | September 11 – The update to Microsoft Defender and Exchange Online quarantine will allow users to view and restore temporarily deleted messages via a new filter and restore option. The release has been delayed, no configuration is needed, and permanently deleted messages remain inaccessible. Users should be informed and documentation updated.
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(Updated) Microsoft Outlook: Enhanced search experience with Copilot across Web, Mac, and Mobile
MC1130610 | September 11 – Microsoft Outlook is introducing Immersive Search with a Copilot side pane that provides AI-generated summaries from emails, Teams messages, and documents after a search. Rolling out worldwide from late September to October 2025, this feature is on by default, requires no admin setup, and is available to Copilot-licensed tenants.
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Set a customizable initial Start menu layout with an enhanced policy
MC1151667 | September 11 – Starting with the September 2025 security update, IT admins can configure an initial Start menu layout that users can later customize. Ifyou’veused theConfigure Start Pins policypreviously, it would revert user personalization to the IT-set configuration after a restart. The enhanced policy allows user changes to…
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60-Day Reminder: Windows 11, version 23H2 (Home and Pro editions) will reach end of servicing on November 11, 2025
MC1151666 | September 11 – On November 11, 2025, Windows 11, version 23H2 (Home andPro editions) will reachend of…
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(Updated) Microsoft Teams: Automatically set work location by connecting to a Wi-Fi network
MC1081568 | September 11 – Microsoft Teams will soon auto-set users’ work location by connecting to organizational Wi-Fi or peripherals, improving over manual setting. This opt-in feature, rolling out December 2025, maps Wi-Fi to buildings and respects users’ working hours. Admins must enable and configure it in their tenant.
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(Updated) Microsoft PowerPoint: Stay on-brand when creating a presentation with Microsoft 365 Copilot
MC1024405 | September 11 – Microsoft 365 Copilot in PowerPoint will soon allow users to create presentations using organizational brand images via SharePoint’s organizational asset library or Templafy. Admins can connect these libraries to Copilot, enabling on-brand image use alongside Microsoft 365 images. Rollout starts June 2025; a Copilot license is required.
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Windows Office Hours: September 18, 2025
MC1151622 | September 11 – If you are an IT admin with questions about managing and updating Windows, we want to help. Every third Thursday of the month, we host a live chat-based event on the Tech Community called Windows Office Hours. Members of the Windows, MicrosoftIntune, Windows Autopilot, Windows Autopatch, and Windows 365 engineering teams will be standing by to answer your questions. We also have experts from FastTrack, the Customer Acceleration Team, and Microsoft public sector…
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(Updated) Deploy a frontline worker pilot in Teams Admin Center
MC1130395 | September 11 – Teams Admin Center will soon enable deployment, management, and monitoring of frontline worker pilots, allowing admins to configure workloads, assign users, share app access via QR code, and track adoption. Public preview starts early November 2025, with general availability by late November 2025.
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Microsoft Dataverse – Standardize security role and system application docs
MC1143699 | September 11 – Release of this feature has been postponed; we will announce a new date in the future.
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Microsoft Teams: Improved organization chart in Profile Card (Desktop, Mac, Web)
MC1151242 | September 10 – Microsoft Teams is enhancing the Profile Card organization chart on Windows Desktop, Mac, and web with improved UI, easier navigation, centered individual view, fewer clicks, and new navigation buttons. Rollout starts late October 2025, enabled by default, requiring no admin action.
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Microsoft Purview DLP and Edge for Business: Automated blocking of unmanaged GenAI apps in unprotected browsers
MC1151234 | September 10 – Microsoft Purview DLP now automates blocking of unmanaged GenAI apps in Edge for Business, removing the need for separate Edge configuration policies. Rollout begins mid-October 2025. Admins should update or disable old policies to use this automation, enhancing data protection and policy enforcement.
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(Updated) Microsoft Teams: Shorter meeting URLs
MC772556 | September 10 – Microsoft Teams is shortening meeting URLs by removing parameters to improve sharing and security. Rollout begins mid-February 2025 for Meet Now links, with scheduled meetings updated by July 2025. New links expire 60 days after scheduled meetings or 8 hours after Meet Now creation; old links remain valid. No admin action needed.
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(Updated) Microsoft Teams: Remote log collection in Teams admin center
MC1087099 | September 10 – Microsoft Teams will enable admins to remotely collect diagnostic logs from users’ Windows and Mac clients via the Teams Admin Center starting mid-July 2025. This seamless process aids troubleshooting without user disruption. Admin roles must be authorized, and compliance with data handling and privacy considerations is required.
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(Updated) Microsoft Teams: town hall organizers, co-organizers, presenters can join the event to preview as attendee
MC1056269 | September 10 – Microsoft Teams town hall organizers, co-organizers, and presenters can soon preview events as attendees from different platforms. This feature rolls out from late May to October 2025, requires no admin action, and disables select features in attendee view without affecting the overall event experience.
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(Updated) Microsoft Teams: New user setting to view incoming calls in a small window
MC1045221 | September 10 – Microsoft Teams will introduce a new default setting allowing users to view incoming calls in a small, resizable window to reduce disruption. The feature will roll out from May to September 2025 across Windows, Mac, web, and mobile platforms, requiring no admin action but user notification is recommended.
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(Updated) Microsoft Teams | Manage voice and face recognition for rooms (MTR-W/MTRA) via device settings
MC1135396 | September 10 – Microsoft Teams Rooms (Windows 4.19+, Android 3.6+) will have new admin UI for managing voice and face recognition, replacing PowerShell configuration. Voice recognition defaults to off. Rollout starts mid-October 2025. Enrollment requires user consent and is completed on-device. Surface Hub and Teams displays are not supported.
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Dynamics 365 Customer Service – Use Assign option for cases to update capacity, presence
MC1151002 | September 10 – We are announcing the ability to use the Assign option on the case form to work with unified routing to update presence and capacity of service representatives in Dynamics 365 Customer Service. This feature will reach general availability on October 10, 2025.How does this affect me?With this release, when supervisors use the “Assign To” option on the case form to assign a case to a representative, the presence and capacity of the service representative will be validated and…
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(Updated) Microsoft Teams: Users can add multiple emoji reactions to each chat or channel message
MC1084032 | September 10 – Microsoft Teams will allow users to add multiple emoji reactions, including custom ones, to a single message starting mid-2025. Up to 20 reactions per user per message are supported, with reactions shown by popularity. The feature rolls out automatically with no admin action needed.
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Dynamics 365 Customer Insights – Journeys – Automate scalable journey creation with the journey API
MC1150989 | September 10 – We are announcing the ability to automate journey creation by using templates, existing segments, and messages in Dynamics 365 Customer Insights – Journeys. This feature will reach general availability on October 10, 2025.How does this affect me?The real-time journeys API gives you the flexibility to automate the journey creation process. You can systematically generate a series of journeys and workflows by using existing segments and messages.Examples:Create…
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Microsoft Defender for Office 365: Message Warnings for Messages with Malicious URLs in Teams
MC1150984 | September 10 – Microsoft Defender for Office 365 will introduce message warnings in Microsoft Teams for messages containing URLs flagged as Spam, Phish, or Malware. Starting with a public preview in September 2025 and general availability in November 2025, warnings will appear for both recipients and senders, enabled by default and manageable via Teams Admin Center.
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(Updated) Microsoft Purview | Information Protection: Sensitivity label grouping modernization
MC1111778 | September 10 – Microsoft Purview is modernizing sensitivity label grouping to a simpler, dynamic scheme with labels and label groups. Manual migration via a wizard will be available for eligible tenants starting December 2025. The change improves label management without affecting user experience and requires no prior admin action.
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(Updated) Contact Unification across Outlook and Teams
MC695487 | September 10 – Starting December 2024, Teams and Outlook will have a unified contact experience for Entra ID accounts, syncing contacts and edits across both apps. Migration began in January 2024, with completion expected by September 2025. Organizations should update documentation and advise users to back up contacts if needed.
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(Updated) Microsoft 365 Copilot | Reference an Excel file when creating a slide with PowerPoint
MC1130389 | September 10 – Microsoft 365 Copilot for PowerPoint will allow users to reference one Excel file stored in OneDrive or SharePoint when creating slides, enabling data-driven presentations with charts or tables. This feature requires a Copilot add-on license, is on by default, and will roll out worldwide from late November to mid-December 2025.
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Microsoft 365 Copilot for Sales – Access Copilot for Sales from Outlook mobile
MC1144603 | September 10 – Update: Release of this feature has been updated. We are announcing the ability to access Microsoft 365 Copilot for Sales from the Microsoft Outlook mobile app. This feature will reach general availability on December 31, 2025.How does this affect me?Users will be able to launch Copilot from Sales under the ellipsis menu from emails within the Microsoft Outlook mobile app. This mobile version will include functionality from the Copilot from Sales desktop application…
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(Updated) Microsoft Viva | New Microsoft Graph APIs for Viva Engage role management
MC1115983 | September 10 – Microsoft is releasing new Viva Engage role management APIs in Microsoft Graph (beta) for IT admins to automate and manage roles like Corporate Communicator and Network Administrator. Rollout begins late September 2025, enhancing programmatic control without changing the current UI. No immediate action required.
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(Updated) New admin control in Microsoft 365 admin center for org-wide sharing of user-built Copilot agents
MC1138797 | September 10 – Microsoft 365 is introducing a new tenant-level admin control to manage who can create org-wide sharing links for user-built Copilot agents. Rolling out from October to late October 2025, admins can customize sharing permissions to align with organizational policies via the Microsoft 365 admin center.
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We’re making some changes to Office Scripts admin settings and controls
MC1150681 | September 9 – Starting October 27, 2025, Office Scripts settings for Excel will move from the Microsoft 365 admin center to the Microsoft 365 Cloud Policy service. Admins must manage three specific settings there; if unchanged, they default to enabled. No compliance issues identified; review and reconfigure as needed.
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Reminder: End of Support for Semi-Annual Enterprise Channel Preview on September 9, 2025
MC1150680 | September 9 – The Semi-Annual Enterprise Channel Preview for Microsoft 365 Apps ends support on September 9, 2025, with the August 2025 update as the last. Admins must transition devices to Monthly Enterprise or Current Channel, as updates will cease and no automatic changes will occur.
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Additional Domain Whitelisting Required for Microsoft Whiteboard
MC1150679 | September 9 – Organizations using explicit domain whitelisting for Microsoft Whiteboard must immediately add whiteboard.svc.cloud.microsoft to their firewall rules to avoid service disruptions, as Whiteboard now operates under the cloud.microsoft domain. No action is needed if *.cloud.microsoft is already whitelisted.
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Coming soon: Multitasking improvements in Microsoft Fabric
MC1150677 | September 9 – Microsoft Fabric will introduce multitasking improvements in early September 2025, including horizontal tabs, multiple open workspaces with color coding, an Object Explorer, and a raised open item limit. These changes enhance workflow efficiency and apply only to Fabric, not Power BI. No action is needed now.
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Microsoft Copilot in Word: View Document Statistics in Dynamic Document Snapshot
MC1150675 | September 9 – Microsoft Copilot in Word will add document statistics like author, last modified date, and open count to the Dynamic Document Snapshot’s Activity tab. This feature, rolling out worldwide in September 2025, is on by default, requires no admin setup, and enhances collaboration by providing easy access to document insights.
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Office Transcription Quota Increase for Copilot-Licensed Users
MC1150669 | September 9 – Starting September 2025, Copilot-licensed users will have their monthly transcription quota increased from 300 to 30,000 minutes in Word and OneNote. The change requires no admin action, applies per user, and may increase AI interaction with customer data without altering data storage or retention policies.
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Action Required: Update firewall configurations to include new network endpoints
MC1150664 | September 9 – By December 2, 2025, update firewall allowlists to include Azure Front Door IP addresses or the service tag “AzureFrontDoor.MicrosoftSecurity” for Microsoft Intune and Basic Mobility and Security for Microsoft 365. Do not remove existing endpoints; add new ranges from the provided Azure IP range files.
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Action Required – Configure Browser Policy to Preserve OneDrive and SharePoint Web Performance and Offline Capability
MC1150662 | September 9 – Chromium browsers will restrict local network access, prompting users for permission when accessing OneDrive, SharePoint, and Microsoft Lists. Without configuring the LocalNetworkAccessAllowedForUrls policy to pre-authorize trusted domains, users will face slower performance and loss of offline capabilities. Admins must deploy this policy before the change rolls out in Chromium 141 at September’s end.
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Microsoft Purview | Data Loss Prevention: New inline protection controls for AI apps in Microsoft Edge for Business
MC1046161 | September 9 – Microsoft Purview Data Loss Prevention will add inline protection in Microsoft Edge for Business to prevent sensitive data leaks when interacting with AI apps like ChatGPT, Google Gemini, and DeepSeek. Rolling out May to November 2025, admins can configure policies but no action is needed before rollout.
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(Updated) Viva Engage: Public discussions now available in Workplace Search and Copilot Search
MC1138788 | September 9 – Viva Engage public discussion posts will appear in Microsoft 365 search results on Office.com, SharePoint.com, and Copilot Search starting late November 2025. No admin action is needed, content visibility respects user access, and a Copilot license is required for Copilot Search. Inform users accordingly.
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Microsoft Copilot Studio – Use up to 1,000 files per agent for SharePoint and OneDrive uploads
MC1150623 | September 9 – We are announcing the ability to use up to 1,000 files per agent for SharePoint and OneDrive uploads in Microsoft Copilot Studio. This feature will reach general availability on October 6, 2025. How does this affect me? With this feature update, up to 1000 documents can be added using the SharePoint document upload feature in an agent’s knowledge. Users will select the document folders they wish to include and the first 1,000 files from the selected folder and subfolders…
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(Updated) Microsoft 365 Copilot: New Researcher agent output controls
MC1143277 | September 9 – Microsoft 365 Copilot’s Researcher Agent now lets users customize report length and export formats, including Word. Rollout begins mid-September 2025, completing by late September. Features are enabled by default, enhancing AI interaction and productivity, with admin controls via Entra ID group membership. No user action needed.
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(Updated) Outlook for iOS: Minimum system requirements updated to iOS 18 and above
MC1131777 | September 9 – Outlook for iOS will require iOS 18 or later starting late September 2025, dropping support for iOS 17 and earlier. Users on unsupported versions may face syncing issues. iPadOS 17 and watchOS 10 support will also end. Organizations should notify users to upgrade devices accordingly.
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(Updated) Microsoft 365 Copilot: Source controls for Researcher Agent
MC1134173 | September 9 – Microsoft 365 Copilot’s Researcher Agent now offers Source Controls, allowing licensed users to select specific sources (Web, Work, Graph entities) for research. Rolling out from late September to October 2025, this feature appears as a button in Copilot apps and requires no admin action.
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(Updated) Microsoft 365 Copilot: Content Sources in Copilot Chat
MC1127230 | September 9 – Microsoft 365 Copilot will allow licensed users to select specific content sources for Copilot Chat responses, enhancing relevance and control. The feature rolls out worldwide from mid-October to late November 2025, is enabled by default, requires no admin action, and has no compliance concerns.
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Microsoft Teams: AI workflows powered by Microsoft 365 Copilot
MC1147389 | September 9 – AI Workflows in the Microsoft Teams Workflows app use Microsoft 365 Copilot scheduled prompts to automate tasks via templates. Available to licensed users, admins must enable the app. Rolling out from late September to October 2025, the feature is off by default and enhances productivity through intelligent automation.
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Dynamics 365 Customer Insights – Journeys – Simplify forms by filtering choices based on previous answers
MC1138227 | September 9 – We are announcing the ability to simplify forms by filtering choices based on previous answers in Dynamics 365 Customer Insights – Journeys. This feature will reach general availability on September 1, 2025. How does this affect me? This feature enables you to set up a relationship between two lookup fields in the Customer Insights – Journeys form editor. After you select the relationship, a selection in one field will filter the values in the other field. Field filtering…
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(Updated) Microsoft Teams: User reporting for incorrectly identified security concerns
MC1147984 | September 9 – Microsoft Teams will let users report messages incorrectly flagged as security threats, available with Microsoft Defender for Office 365 Plan 2 or Defender XDR. The feature launches in September 2025 (Targeted Release) and November 2025 (General Availability), requiring admin enablement in Teams and Defender portals.
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(Updated) Microsoft Purview | Insider Risk Management – Personal email triggers
MC1147381 | September 9 – Microsoft Purview Insider Risk Management will add two new email triggers—sending attachments to free public domains and to personal email—to detect data exfiltration. Rollout begins December 2025. Admins can enable these via IRM settings; existing policies remain unaffected. No action required to prepare.
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(Updated) Microsoft Viva Insights: People Skills insights for analysts
MC1075900 | September 9 – Microsoft Viva Insights will introduce the Skills landscape Power BI report, enabling analysts to explore organizational People Skills data, skill distribution, and hierarchy. Public preview starts late June 2025; general availability begins late September 2025. Setup requires enabling People Skills data in Viva Insights with appropriate licenses.
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(Updated) Microsoft Edge: AI-powered History search now available
MC1130387 | September 9 – Microsoft Edge will roll out an AI-powered History search feature from late September to late October 2025, enabling semantic search of browsing history using an on-device model. It is Windows desktop only, controlled by a toggle and admin policy, with data processed locally and not sent to Microsoft.
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New file protection in Teams chat and channels blocks unsafe content
MC1148540 | September 9 – Microsoft Teams will block messages containing weaponizable file types (e.g., executables) in chats and channels to reduce malware risks. This feature starts targeted release in September 2025 (off by default) and general availability in November 2025 (on by default). Admins can enable it via Teams Admin Center or PowerShell.
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(Updated) Microsoft Teams: Malicious URL Protection for Teams Chat and Channels
MC1148539 | September 9 – Microsoft Teams will roll out malicious URL protection in chats and channels starting September 2025, warning users of phishing links. The feature requires admin activation during preview and will be on by default at general availability in November 2025. It uses reputation-based scanning via Microsoft Defender.
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(Updated) Co-organizer experience updates in Teams Webinars and Townhalls
MC688109 | September 9 – Co-organizers in Teams Webinars and Townhalls can now fully edit event details, publish, and cancel events like organizers. Rollout starts mid-January 2025 for targeted release and early March 2026 for general availability. No preparation is needed from organizations.
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Microsoft Outlook: Replace quick compose pop-up with inline appointment creation in new Outlook for Windows and web
MC846387 | September 9 – In new Outlook for Windows and web, single-clicking an empty calendar slot now allows inline appointment creation instead of a quick compose pop-up. Double-click behavior remains unchanged. Rollout starts October 2025, requires no admin action, and aims to improve user experience.
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New Fabric Tenant Setting: “Set alert” Button Visibility for Power BI Users
MC1150124 | September 8 – A new Microsoft Fabric tenant setting will make the “Set alert” button visible to all Power BI web users, enabling them to create Fabric Activator alerts if permitted. Rollout starts September 14, 2025, with default enablement by October 13, 2025. Admins can manage this setting beforehand.
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Microsoft Defender for Office 365: New records in Streaming API and Sentinel EmailEvents table
MC1150118 | September 8 – Starting early October 2025, Microsoft Defender for Office 365’s Streaming API and Sentinel EmailEvents table will store both current and historical email verdicts and locations, showing multiple records per email. Admins should update queries and dashboards accordingly, using KQL’s arg_max to retrieve the latest records.
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Manage interest is being replaced by Manage People Skills by December 31, 2025
MC1150117 | September 8 – The Manage interest feature in Viva Learning will be retired and replaced by Manage People Skills by December 31, 2025. Existing interest data will be deleted, and admins should enable and prepare for Manage People Skills before the transition. No compliance issues are identified.
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(Updated) Microsoft Purview | Export download with pre-authorized link support
MC1147383 | September 8 – Microsoft Purview eDiscovery (Premium) will support pre-authorized and non pre-authorized export download links starting mid-September 2025, enhancing download reliability and control. Pre-authorized links enable faster downloads; non pre-authorized require re-authentication for restricted environments. Admins should review policies and update documentation accordingly.
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(Updated) Microsoft Purview | Communication Compliance: Policy alerts improvements
MC920304 | September 8 – Microsoft Purview Communication Compliance is enhancing policy alerts with customizable frequency and recipients. Public preview starts late July 2025, general availability in January 2026. Features include pseudonymized usernames, role-based access, and audit logs to ensure privacy and compliance monitoring.
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(Updated) Additional document processing rule actions for Microsoft SharePoint libraries
MC1137601 | September 8 – Microsoft SharePoint libraries will gain new document processing rule actions—copy file to, move file to, and set content type—rolling out from late August to mid-September 2025. These enable automated file management based on metadata for users with edit permissions. Users should prepare by informing teams and reviewing existing rules.
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