Windows message center:
Windows 11 version 25H2 End of Servicing on October 12, 2027
How to get the Windows 11 2025 version 25H2 Update
Windows Experience Blog: Windows is essential for more than a billion people to connect, learn, play and work, and today we are announcing the availability of the Windows 11 2025 Update (also known as Windows 11, version 25H2). This year’s annual feature update (version 25H2) will continue the...
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What's new in Windows 11, version 25H2 for IT pros
Learn more about what's new in Windows 11 version 25H2, including servicing updates.
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Current status as of October 21, 2026
Windows 11, version 26H2, also known as the Windows 11 2026 Update, is now available. We recommend you move to version 26H2 to stay up to date, secure, and productive.
The Windows 11, version 26H2 phased rollout has reached full availability for devices running Windows 11, versions 25H2 and 24H2. You can check for the update by going to Settings > Windows Update and selecting Check for Windows updates. If Windows 11, version 26H2 is available for your device, select Download & install. A single restart will complete the process. If you want updates to be installed as soon as they’re available, turn on Get the latest updates as soon as they’re available. For more details, watch this video.
For more details on how to install Windows 11, version 26H2, watch this video.
Known issues
Windows 11, version 25H2 known issues and notifications
View announcements and review known issues and fixes for Windows 11, version 25H2
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Summary | Originating update | Status | Last updated |
|---|---|---|---|
| Devices might experience a black screen or desktop loading issues after sign-in Microsoft has received reports of this issue occurring in some virtual desktop environments. | OS Build 26100.9278 KB5120998 2026-08-27 | Resolved KB5127648 | 2026-10-13 10:13 PT |
| Remote Desktop connections might fail for non-admin users with error 0xC000000D This issue affects non-admin users connecting through Remote Desktop with Administrator protection enabled. | OS Build 26200.9550 KB5124010 2026-09-22 | Mitigated | 2026-10-13 10:13 PT |
| Applications which require AC-3 audio decoding might close unexpectedly This issue is more likely to occur in legacy applications, and unlikely for many modern applications. | OS Build 26200.9550 KB5124010 2026-09-22 | Resolved KB5127648 | 2026-10-13 10:13 PT |
| Domain-joined devices might lose their secure trust relationship with the domain Some Credential Guard protected machine accounts might be unable to sign in interactively will valid domain credentials. | OS Build 26100.9445 KB5124008 2026-09-08 | Resolved KB5124010 | 2026-10-08 17:44 PT |
| Incorrect notifications that "Microsoft Defender Antivirus is turned off" Microsoft Defender Antivirus remains active and functioning correctly despite notifications following the latest update. | N/A | Resolved | 2026-09-30 16:42 PT |
| USB audio devices might fail to start or produce no sound Some USB Audio Class 1.0 devices display Code 10 or fail in multichannel audio modes after installing KB5124008. | OS Build 26100.9445 KB5124008 2026-09-08 | Mitigated | 2026-09-29 10:12 PT |
Resolved issues
Resolved issues in Windows 11, version 25H2
Resolved issues in Windows 11, version 25H2
learn.microsoft.com
Summary | Originating update | Status | Date resolved |
|---|---|---|---|
| Devices might experience a black screen or desktop loading issues after sign-in Microsoft has received reports of this issue occurring in some virtual desktop environments. | OS Build 26100.9278 KB5120998 2026-08-27 | Resolved KB5127648 | 2026-10-13 09:54 PT |
| Applications which require AC-3 audio decoding might close unexpectedly This issue is more likely to occur in legacy applications, and unlikely for many modern applications. | OS Build 26200.9550 KB5124010 2026-09-22 | Resolved KB5127648 | 2026-10-13 09:54 PT |
| Domain-joined devices might lose their secure trust relationship with the domain Some Credential Guard protected machine accounts might be unable to sign in interactively will valid domain credentials. | OS Build 26100.9445 KB5124008 2026-09-08 | Resolved KB5124010 | 2026-10-08 17:09 PT |
| Remote Desktop Services might stop responding after Sept. 2026 security update Some Windows devices with Remote Desktop enabled might experience Remote Desktop Services (RDS) instability. | OS Build 26100.9445 KB5124008 2026-09-08 | Resolved KB5129195 | 2026-09-14 10:29 PT |
| Incorrect notifications that "Microsoft Defender Antivirus is turned off" Microsoft Defender Antivirus remains active and functioning correctly despite notifications following the latest update. | N/A | Resolved | 2026-09-17 18:22 PT |
| Host folder shares might be unavailable in Hyper-V-based Linux VMs Plan9 host folder shares might not appear in the guest environment after installing the September 2026 security update. | OS Build 26100.9445 KB5124008 2026-09-08 | Resolved KB5129195 | 2026-09-14 10:29 PT |
| Microsoft Teams and Outlook might fail to launch on ARM-based devices This most likely occurs on new PCs after installing the August Windows security update and does not affect other apps. | OS Build 26100.9168 KB5121003 2026-08-11 | Resolved KB5124008 | 2026-09-08 11:16 PT |
| Mouse customization is reset on non-English Windows devices Custom cursors and cursor animations may intermittently revert | OS Build 26100.9278 KB5120998 2026-08-27 | Resolved KB5124008 | 2026-09-08 10:41 PT |
| Desktop background settings are lost or reset on some devices For affected Windows installations, backgrounds might revert to a black solid color | OS Build 26100.9278 KB5120998 2026-08-27 | Resolved KB5124008 | 2026-09-08 10:41 PT |
| Some games become unresponsive when certain drivers are present This issue is related to peripherals with RGB features | OS Build 26100.9168 KB5121003 2026-08-11 | Resolved | 2026-08-26 23:14 PT |
| Windows Server Update Service 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 |
| Some Dell devices with a specific Intel driver might experience poor performance This issue affects specific Dell models with an Intel Innovation Platform Framework Processor Participant driver. | OS Build 26100.8737 KB5095093 2026-06-23 | Resolved KB5121767 | 2026-07-18 11:33 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 KB5095093 | 2026-06-30 10:24 PT |
| Deleting a file from the Recycle Bin displays an internal filename in the dialog This issue only occurs within the confirmation dialog after installing the June Windows security update. | OS Build 26100.8655 KB5094126 2026-06-09 | Resolved KB5095093 | 2026-06-23 09:43 PT |
| May 2026 security update might fail to install with error 0x800f0922 Some devices might fail to install the May security update due to insufficient free space on EFI System Partition (ESP). | OS Build 26100.8457 KB5089549 2026-05-12 | Resolved KB5089573 | 2026-05-29 11:43 PT |
| Updates installed via WUSA might fail if installed from a shared folder This issue might occur when installing an update from a network folder containing multiple .msu files. | N/A | Resolved KB5079391 | 2026-03-26 13:39 PT |
| Microsoft account sign ins might fail for Microsoft Teams Free and other apps Only sign ins using Microsoft accounts are affected. Businesses using Microsoft Entra ID will not experience this issue. | OS Build 26100.8037 KB5079473 2026-03-10 | Resolved KB5085516 | 2026-03-21 13:56 PT |
| Microsoft received reports of loss of access to the C: drive and app failures Reports mention the issue affects some Samsung devices in specific regions after installing KB5077181. 
Recovery steps: Samsung Galaxy Connect or Samsung Continuity Service might cause loss of access to C: driveMicrosoft Support: If Samsung Galaxy Connect or Samsung Continuity Service is installed and your Samsung device is experiencing an issue where you lose access to the C: drive and encounter app failures, please follow these steps: Before you start Plan for 10–15 minutes to complete these steps...
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| OS Build 26100.7840 KB5077181 2026-02-10 | Resolved External | 2026-03-16 20:50 PT |
| Connection and authentication failures in Azure Virtual Desktop and Windows 365 January 2026 Windows update causes Windows App credential prompt failures on Azure Virtual Desktop and Windows 365 | OS Build 26100.7623 KB5074109 2026-01-13 | Resolved KB5078127 | 2026-01-24 14:06 PT |
| Apps might become unresponsive when saving files to cloud-backed storage Affected apps include Outlook, which can become unresponsive when accessing PST files stored on Microsoft OneDrive. | OS Build 26100.7623 KB5074109 2026-01-13 | Resolved KB5078127 | 2026-01-24 14:06 PT |
| Task Manager process might continue to run in background after app is closed Overall system performance might be impacted when multiple instances of Task Manager app remain running after closure. | OS Build 26100.7019 KB5067036 2025-10-28 | Resolved KB5068861 | 2025-12-08 14:24 PT |
| IIS websites might fail to load Server-side applications that rely on HTTP.sys may experience issues with incoming connections. | OS Build 26100.6899 KB5066835 2025-10-14 | Resolved KB5067036 | 2025-10-28 10:00 PT |
| Problems playing protected content in some BluRay/DVD/Digital TV applications Some apps are unable to display or record live TV or play Digital Rights Management (DRM) protected content. | N/A | Resolved KB5067036 | 2025-10-28 10:00 PT |
| Smartcard authentication issues might occur with the October 2025 Windows update This issue is related to a security change introduced for strengthening Windows Cryptographic Services. | OS Build 26100.6899 KB5066835 2025-10-14 | Resolved | 2025-10-22 17:31 PT |
| USB mouse and keyboard not working in the Windows Recovery Environment (WinRE) This issue affects USB devices only within WinRE after installing Windows updates released on October 14, 2025. | OS Build 26100.6899 KB5066835 2025-10-14 | Resolved KB5070773 | 2025-10-20 14:00 PT |
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