M365 Message Center

Geändert

12.02.2026

Services

Microsoft 365 apps

[Introduction] To maintain a high-quality and reliable experience for live Captions & Subtitles in the Microsoft 365 PowerPoint app, Microsoft is upgrading the backend service that supports this capability. As part of this improvement, older Office client versions will no longer be supported. Updating to the minimum required PowerPoint version ensures continued accessibility, performance, and reliability. [When this will happen:] Upgrade by the end of September 2026 [How this affects your organization:] Who is affected: Organizations using Microsoft 365 PowerPoint app (Win32 or Mac) Users running PowerPoint versions earlier than: Windows (Win32): 16.0.19426.20218 macOS: 16.103.1207.4 [What will happen:] Users on unsupported versions will lose access to Captions & Subtitles after the listed dates. There is no change for users on supported versions. No changes to default settings or admin

Geändert

12.02.2026

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 February 19 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

10.02.2026

Services

Windows

Windows 11, version 26H1 is a hardware‑optimized release designed to enable next‑generation silicon developed in partnership with device manufacturers and silicon partners. This release will be available exclusively as a preinstalled experience on select new devices beginning in early 2026. It is not intended as a feature update for existing Windows 11 devices and will not be offered through Windows Update. When will this happen: The first devices with Windows 11, version 26H1 preinstalled will start shipping in early 2026. This release is limited to select new devices only and is not offered as an in‑place update for devices running Windows 11, versions 25H2 or 24H2. How this will affect your organization: Windows 11, version 26H1 is scoped specifically for select new hardware platforms, so it will not be offered through Windows Update for existing devices and will not impact ongoing ro

Geändert

10.02.2026

Services

Windows

Secure Boot is a foundational Windows security feature that runs at startup, before Windows load, and helps ensure that only trusted, digitally signed software can execute. After more than 15 years of continuous service, the original Secure Boot certificates are reaching the end of their planned lifecycle and begin expiring in late June 2026.To learn more about Microsoft’s effort to update these certificates, see the blog post Refreshing the root of trust: industry collaboration on Secure Boot certificate updates. To prevent disruption and maintain secure startup across Windows environments, plan for these certificates update following the guidance in the Secure Boot playbook.When this will happen:The 2011 Secure Boot certificates begin expiring in June 2026.What you need to do to prepare:Review the Secure Boot playbook for certificates expiring in 2026 to understand requirements, timel

Geändert

10.02.2026

Services

Windows

The February 2026 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 KB5074109 (released January 13, 2026), KB5077744 (released January 17, 2026), and KB5078127 (released January 24, 2026).This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.This update addresses an issue that determines device eligibility for the full-screen gaming experience.This update addresses an issue that pre

Geändert

08.02.2026

Services

Windows

11:30 am PT update: Microsoft Store and Windows Update services have been restored. Some IT administrators may continue to experience residual latency affecting Windows Server update operations, including the Windows Server sync API. This Server‑specific issue is being addressed separately. If you experience this latency, please contact Microsoft Support for business.8:34 am PT post: A power outage at a datacenter is impacting customers’ ability to complete operations in the Microsoft Store and Windows Update. As a result, some users may experience failures or timeouts when installing or updating Microsoft Store apps, or when downloading Windows updates.Although power has been restored, service recovery is still in progress. Storage services are gradually returning online, and some customer impact may continue while recovery completes.Microsoft is actively working to restore full-service