M365 Message Center

Geändert

11.09.2025

Services

Windows

On November 11, 2025, Windows 11, version 23H2 (Home and Pro editions) will reach end of servicing. The November 2025 monthly security update will be the last update available for these editions. After this date, devices running these editions will no longer receive monthly security and preview updates containing protections from the latest security threats.As always, we recommend that you update your devices to the latest version of Windows 11. For detailed information, see the Windows 11, version 23H2 reaching end of updates (Home, Pro) lifecycle page. For information about servicing timelines and lifecycle, see Windows 11 release information, Lifecycle FAQ - Windows, and Microsoft Lifecycle Policy search tool.

Geändert

11.09.2025

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 September 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 calend

Geändert

09.09.2025

Services

Microsoft 365 for the web

IntroductionTo maintain uninterrupted access to Microsoft Whiteboard, organizations using explicit domain whitelisting must update their firewall configurations. This change supports backend service operations as part of Microsoft’s One Consolidated Domain Initiative (OCDI).When this will happenThis change is effective immediately. We recommend updating your firewall rules as soon as possible to avoid service disruptions.How this affects your organizationMicrosoft Whiteboard has transitioned to the cloud.microsoft domain under OCDI. While many tenants have already whitelisted *.cloud.microsoft, some organizations using explicit domain whitelisting have only added whiteboard.cloud.microsoft.To ensure full functionality, including backend service operations, the following domain must also be whitelisted:whiteboard.svc.cloud.microsoftFailure to include this domain may result in issues with

Geändert

09.09.2025

Services

Windows

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 to receive ESUs. When will this happen: September 9, 2025 How this will affect your organization: Removing certain binaries from WSUS helps ensure the integrity and security of our software supply chain. This specifically applies to dependencies on components that no longer meet our compliance and security standards. The security benefit of removing these binaries from Windows Server 2025 comes with a

Geändert

09.09.2025

Services

Windows

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 the Windows 11 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. Highlights for the Windows 11, version 24H2 update: This security update includes improvements that were a part of update KB5064081 (released August 29, 2025).This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.This update addresses an issue that caused non-admin users to receive unexpected User Account Control (UAC) prompts when MSI installers perform certain custom actions.This update enables auditing Server Messag

Geändert

09.09.2025

Services

Windows

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 KB5014754: Certificate-based authentication changes on Windows domain controllers.When will this happen:This change is effective immediately in Windows updates released September 9, 2025. Servers which run Active Directory Certificate Services, as well as Windows domain controllers that service certificate-based authentication, are now required to meet certain certificate mapping criteria in order for authentication operations to succeed. These changes address vulnerabilit