M365 Message Center

Geändert

22.12.2025

Handlung bis

01.08.2026

Services

Microsoft Defender XDR

Updated December 5, 2025: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft Defender Threat Intelligence (MDTI) is converging with Microsoft Defender and Microsoft Sentinel to deliver integrated threat intelligence capabilities directly within your SecOps environment. This change simplifies access to threat insights, improves detection and response workflows, and aligns with customer feedback for a unified experience. [When this will happen] Full convergence will be completed by August 1, 2026. New capabilities are available now, and as of August 2025, all MDTI data has been published via the free connector, with new Threat Analytics APIs replacing retired MDTI APIs. [How this affects your organization] Who is affected: Organizations using Microsoft Defender Threat Intelligence, Microsoft Defender, or Microsoft Sentinel. What will happen: Threat Intellig

Geändert

18.12.2025

Services

Windows

Microsoft has identified an issue affecting Message Queuing (MSMQ) functionality in some enterprise environments after installing the December 2025 Windows security update (released December 9, 2025). Individuals using Windows Home or Pro editions on personal devices are very unlikely to experience this issue, as it primarily affects enterprise or managed IT environments.To address this issue, an out-of-band (OOB) update has been released, today, December 18, 2025, on the Microsoft Update Catalog. For more information and installation instructions, refer to the appropriate KB article for each affected version of Windows listed below. For additional guidance, see How to download updates from the Microsoft Update Catalog.Windows 10, version 22H2 ESU and Windows 10 Enterprise LTSC 2021 (KB5074976)Windows Server 2019 and Enterprise LTSC 2019 (KB5074975)Windows Server 2016 and Windows 10 LTSB

Geändert

12.12.2025

Services

Microsoft 365 apps

Updated December 12, 2025: We have updated the timeline. Thank you for your patience. To ensure continued high-quality performance of the Read Aloud, Transcription, and Dictation features in Microsoft 365 Office apps, we’re upgrading the backend service that powers these capabilities. As a result, these features will no longer function on Office clients running versions earlier than 16.0.18827.20202 after September 2026.We are extending the supporting period for customers to prepare and upgrade to the supported version. Here is the updated timeline: General Availability (Worldwide): End of September 2026 (previously end of January) General Availability (GCC, GCC High, DoD): End of November 2026 (previously end of March) How this affects your organization If your organization is using Microsoft 365 Office apps with version numbers lower than 16.0.18827.20202, users will lose access to Rea

Geändert

11.12.2025

Services

Windows

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, Microsoft Intune, 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 teams. Want to attend the December 18 session of Office Hours? Add it to your calendar and select Attend on the event page to let us know you’re coming. There is no video or live meeting component. Simply visit the event page, log in to the Tech Community, and leave your questions in the Comments section. You can also bookmark https://aka.ms/Windows/OfficeHours for upcoming dates (and the ability to add this event to your calenda

Geändert

10.12.2025

Services

Windows

Starting with the January 2026 security update, the AllowOOBEUpdates CSP policy will be available and disabled by default. It shows up as a new setting on the Windows Autopilot Enrollment Status Page (ESP). This policy allows you to install the latest Windows quality updates during the out-of-box experience (OOBE) on eligible devices. Devices must be Microsoft Entra joined or Microsoft Entra hybrid joined and running Windows 11, version 22H2 or later. The original announcement and documentation are updated to reflect this change and to clarify device targeting. When will this happen: January 2026: The AllowOOBEUpdates CSP policy will be available and disabled by default. August 2025: The original announcement introduced this new capability. How this will affect your organization: With Windows Autopilot and Microsoft Intune (or alternative management solutions), you can maintain seamless

Geändert

09.12.2025

Services

Windows

The December 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 the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. Highlights for the Windows 11, version 25H2 update: This security update includes improvements that were a part of update KB5070311 (released December 1, 2025).This update addresses security issues for your Windows operating system. This update addresses an issue where Ask Copilot didn’t activate the Click to Do* window as expected. The window now appears in the foreground when you share data with Copilot.This update addresses an issue where File Explorer briefly flashes white when you navigate b