M365 Message Center

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03.06.2026

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Microsoft Copilot (Microsoft 365)

Updated June 3, 2026: We have updated the timeline. Thank you for your patience. What and WhyWe’re introducing a new capability that allows users with a Microsoft 365 Copilot license to scope and control Copilot Chat responses by selecting specific content sources. This enhancement is designed to improve the relevance and accuracy of Copilot responses by limiting them to user-selected sources, aligning with customer feedback for more transparent and customizable AI interactions.This message is associated with Microsoft 365 Roadmap ID 496596Rollout ScheduleGeneral Availability (Worldwide): Rollout will begin mid-June 2026 (previously early June) and is expected to complete by end of June 2026 (previously mid-June).Impact on Your Organization Who is affected: Users with a Microsoft 365 Copilot license. What will happen: Users will see a new option to select content sources when using Copil

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03.06.2026

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Microsoft Teams

Updated June 3, 2026: We have updated the content. Thank you for your patience.Coming soon to Microsoft Teams: When users connect to their organization's Wi-Fi, Teams can automatically check them in to a building or a reserved desk. This makes it easier for users to coordinate work with their coworkers and connect in person.This feature is off by default in every tenant and requires tenant admins you to take action to turn it on and configure it. After you turn it on, end-users remain in control and can choose whether to share their work location with their coworkers.This message applies to Teams for Windows and Teams for macOS.This message is associated with Microsoft 365 Roadmap ID 488800. [When this will happen:] General Availability (Worldwide): We will begin rolling out early June 2026 (previously early May) and expect to complete by late June 2026 (previously late May).[How this wi

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03.06.2026

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Microsoft Teams

Update as of June 2, 2026 – We have updated the timeline. Thank you for your patience. Migration of channels is complete with a few pending channels for which we have shared more information here for admin remediation. Admins must take action within 30 days, by end of July, 2026, to remediate specific private channel configurations that are currently not eligible for migration. There are two impacted scenarios.The first includes private channels with no users, where the roster is empty and the channel is inaccessible to any tenant user. The second includes private channels that contain only guest users and no in-tenant owners. In both cases, these channels cannot be migrated in their current state. To complete migration of these channels, admins are required to add at least one in-tenant user as an owner to each affected private channel by end of July, 2026. This ensures the channels hav

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01.06.2026

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Microsoft Purview

Updated June 1, 2026: We have updated the timeline. Thank you for your patience.[Introduction] Microsoft Purview is introducing Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform. This new capability allows admins to test and validate custom classifiers on production data before publishing. Simulation Mode enables admins to optimize classifier logic before deployment, helping in reducing false positives, scanning latency, and noisy matches. Admins will access simulation controls and classifier health insights directly in the Microsoft Purview compliance portal, making it easier to monitor and improve classifier performance in one centralized location.This message is associated with Roadmap ID 523201.[When this will happen:] Public Preview: Rollout begins late June 2026 (previously early March), completes by end of July 2026 (previously mid-Ap

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29.05.2026

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Microsoft Teams

Updated May 29, 2026: We have updated the timeline. Thank you for your patience. [Introduction] We’re introducing a private chat feature for organizers, co-organizers, and presenters in structured meetings and webinars in Microsoft Teams. This separate chat enhances collaboration by allowing key participants to communicate privately before, during, and after the event, without involving attendees. Additionally, we are unifying backroom chat behavior in town halls to ensure consistent functionality across all structured meetings. Currently, backroom chat behavior varies depending on whether streaming chat is enabled for town halls and whether the organizer has a Teams Premium license. This update removes that inconsistency.This message is associated with Roadmap ID 392328 and applies to Teams for Windows desktop, Teams for Mac desktop, Teams for the web, Teams for iOS/Android, MTR-W and M

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27.05.2026

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Microsoft Teams

Updated May 27, 2026: We have updated the timeline. This feature will now be included as part of another update referenced in MC796790. Administrators will gain the ability to manage Microsoft 365 certified SaaS applications through org-wide settings for third-party apps. No changes will be applied to tenant-wide settings unless initiated by an administrator. Thank you for your patience.This feature will empower administrators to manage the availability of trusted Microsoft Teams apps based on rules, for enhanced security. Admins will be able to manage Microsoft 365 certified apps in the Teams admin center through a new control in Org-wide settings. You can further customize the availability of these apps based on permissions accessed and publisher names. The system automatically checks the Microsoft 365 certified apps that meet all the conditions you specify and makes those apps availab