Windows 11, version 26H1 known issues and notifications

Find information on known issues and the status of the Windows 11, version 26H1 availability. For immediate help with Windows update issues, open the Get Help app if you are using a Windows device, or go to support.microsoft.com. Follow @WindowsUpdate on X for Windows release health updates. If you are an IT administrator and want to programmatically get information from this page, use the Windows Updates API in Microsoft Graph.

Current status as of February 10, 2026
 
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, with capabilities tailored specifically for those platforms. 
 
Windows 11, version 26H1 is not intended as a feature update for existing devices and will not be offered through Windows Update. Devices running Windows 11, versions 25H2 and 24H2 will continue receiving monthly security and quality updates, as well as new features, and remain supported according to servicing timelines and Microsoft lifecycle policies. 
 
For IT admins, Windows 11, versions 25H2 and 24H2 remain the recommended releases for enterprise deployment. While Windows 11, version 26H1 is not intended for broad deployment across existing Windows 11 environments, organizations evaluating new hardware platforms may adopt it selectively without affecting their broader environment. For more information, see What to know about Windows 11, version 26H1. For servicing and lifecycle information, see Windows 11 release informationWindows Lifecycle FAQ, and Microsoft Lifecycle Policy search tool.

Known issues

See open issues, content updated in the last 30 days, and information on safeguard holds. To find a specific issue, use the search function on your browser (CTRL + F for Microsoft Edge).

SummaryOriginating updateStatusLast updated
Windows Server Update Services sync operations might have issues or time out
Remediation efforts are underway. Synchronization times are expected to return to normal as recovery progresses.
N/A

Resolved
2026-07-20
13:22 PT
GIF functionality in the Windows Emoji Panel might become unavailable
This issue occurs because the previous GIF provider (Tenor) retired its service on June 30, 2026.
N/A

Resolved
KB5095091
2026-06-30
10:55 PT

Issue details

July 2026

Windows Server Update Services sync operations might have issues or time out

StatusOriginating updateHistory
Resolved N/A

Resolved: 2026-07-20, 13:22 PT
Opened: 2026-07-17, 18:18 PT

Microsoft has identified a service degradation affecting Windows Server Update Services (WSUS). Organizations might experience increased synchronization times or sync operation timeouts on WSUS servers. This issue began in recent days, with heightened impact observed starting July 13, 2026, and service-side mitigation on Saturday July 18, 2026. After this day, synchronization times and sync operations are expected to be restored to normal.

This issue is related to a buildup of publishing metadata which is present on existing WSUS server installations as well as from the service side.

Resolution: There are two parts to the resolution of this issue.

  • ​Organizations with existing WSUS server installations that are experiencing long sync times can benefit from manual steps in order to clean up unneeded metadata. This metadata is present in existing WSUS installations but can be safely removed. Detailed guidance has been provided at the following KB article: https://support.microsoft.com/help/5121986.
  • ​On July 18, 2026, Microsoft deployed a service-side mitigation which returns synchronization times and sync operations back to normal for new WSUS installations and rebuilds. After this date, newly installed or rebuilt WSUS servers should not encounter this issue.

Affected platforms:

  • ​Client: Windows 11, version 26H1; Windows 11, version 25H2; Windows 11, version 24H2; Windows 11, version 23H2; Windows 10, version 22H2; Windows 10, version 21H2; Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10 Enterprise LTSC 2016; Windows 10, version 1607
  • ​Server: Windows Server 2025; Windows Server 2022; Windows Server, version 1809; Windows Server 2019; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012
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June 2026

GIF functionality in the Windows Emoji Panel might become unavailable

StatusOriginating updateHistory
Resolved KB5095091N/A

Resolved: 2026-06-23, 10:00 PT
Opened: 2026-06-30, 10:23 PT

Starting on June 30, 2026, you might not see GIF options in the Windows Emoji Panel on some devices and instead see a message stating “GIF service is not available.” This issue occurs because the previous GIF provider (Tenor) retired its service on that date. 

Resolution: This issue was resolved by Windows updates released June 23, 2026 (KB5095091), and later. These updates include a new GIF provider (GIPHY). To restore GIF functionality in the Windows Emoji Panel, install the latest available Windows updates, which contains important improvements and issue resolutions, including this one. 

Affected platforms:

  • ​Client: Windows 11, version 26H1; Windows 11, version 25H2; Windows 11, version 24H2
  • ​Server: none
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