Applies To
Windows 11 version 25H2, all editions Windows 11 version 24H2, all editions

Release Date:

5/26/2026

Version:

OS Builds 26200.8524 and 26100.8524

​​​​This cumulative update for Windows 11, version 25H2 and 24H2 (KB5089573), includes production-quality improvements. 

Visit the Windows release health dashboard for the latest status on this release.

Announcements and messages

This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.  

Windows Secure Boot certificate expiration

Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.

Highlights

​​​​​​​​​​​​​This update is available through two release phases: gradual rollout and normal rollout. A gradual rollout delivers an update in phases, so features reach devices over time instead of all at once, meaning availability varies by device.​​​​​​ A normal rollout is the broad release to all eligible devices at the same time, usually when it reaches general availability (GA). 

The following summary outlines features from AI-powered Windows 11 PC experiences, along with improvements and fixes. The bold text within the brackets indicates the item or area of the change.

This section highlights some new features and enhancements for Windows 11 PCs, including AI-powered capabilities, continuous innovation, and performance improvements.

  • [Shared Audio] New! Shared Audio enables two people to listen to the same audio from a single Windows 11 PC at the same time. It uses Bluetooth® LE Audio broadcast technology to make sharing easy. For example, you can watch a movie while traveling or listen to music while studying together. To start sharing audio, open Quick settings from the taskbar, select Shared Audio, choose two supported, paired, and connected devices, and then select Start sharing. To learn more about Shared Audio, see Extending Bluetooth® LE Audio on Windows 11 with Shared Audio.

  • [Magnifier in Windows]  

    • New!  Magnifier now provides clearer and more consistent announcements when working with a screen reader. You’ll hear helpful announcements when you zoom in or out, switch views, turn color inversion on or off, or turn Magnifier on or off. This makes it easy to stay oriented while you work.

    • New!  Magnifier now supports magnification of permitted protected content.

    • This update improves smoothness when moving Magnifier in lens mode.

  • [Task Manager] 

    • New!  Task Manager now offers improved visibility into NPU usage on PCs with an NPU. New optional NPU and NPU Engine columns are available on the Processes, Users, and Details pages, along with NPU Dedicated Memory and NPU Shared Memory optional columns on the Details page. Neural engines that are part of a GPU now appear on the Performance page, providing a more complete view of AI‑related activity.  A new optional Isolation column on the Processes and Details pages shows which apps are running in an AppContainer. You can add any of the new columns by right‑clicking a column header in Task Manager and selecting them from the menu.

    • This update improves CPU speed display on the Performance page of Task Manager for VMs, so it doesn’t show higher than unexpected numbers after resuming from hibernate.

  • [Camera] New! Windows 11’s Multi-App Camera feature allows multiple applications to access your camera stream at the same time. Basic Camera mode in Windows 11 enables simplified camera functionality, useful for troubleshooting or improving stability when your camera is not working correctly. Enterprise admin can now set Multi-App Camera mode or Basic Camera mode through Group Policy, under Computer Configuration > Administrative Templates > Windows Components > Camera > Configure Camera Options.

  • [Windows Setup] New! You can now choose a custom name for your user folder on the Device Name page during Windows setup. The updated experience makes it easier to select a custom name during setup only. If this step is skipped, Windows uses the default folder name and continues setup as usual. User folder names must follow standard Windows naming requirements.

  • [General Performance] This update accelerates app launch and core shell experiences such as Start menu, Search, and Action Center.

  • [Windows Hello]

    • This update optimizes the Windows Biometric service (WinBio) to help improve performance when your device resumes from Modern Standby.

    • This update reduces unexpected authentication blocks in Windows Hello Enhanced Sign‑in Security by resolving missing secure enrollment metadata.

    • This update improves sign‑in behavior on the lock screen and sign‑in screen. When Windows Hello face or fingerprint is set up and available, it is now the default sign-in method every time you sign in, even if you used a different method previously. If you need to use your Windows PIN instead and use it three times in a row, Windows will stay with PIN until you switch to another sign-in method.

  • [Windows Search Box] Windows Search will now find and prioritize files with as few as two characters.

  • [Storage]

    • The dialog box for creating a Dev Drive now supports specifying the size in gigabytes (GB) instead of only megabytes (MB). This option is also available when resizing volumes in Settings > System > Storage.

    • In Settings > System > Storage, you now see a User Account Control (UAC) prompt only when you choose to view temporary files, instead of immediately when opening the page.

  • [USB] 

    • This update improves reliability for displays attached to USB4 docks and hubs. These displays now light up more consistently, particularly when coming out of standby.

    • The USB3 stack is updated to have additional resiliency and recovery measures in place against certain unexpected hardware faults and conditions. Users will experience higher reliability with USB devices.

  • [Sensors] This update improves resiliency against apps that could keep the sensor hub powered on and drain power, impacting battery life.

  • [Human Interface Device (HID)] This update improves battery life related to the HID and Input stack for failed HID devices. Power hygiene is also improved against applications that might initiate HID transfers during standby.

  • [Input] The update improves:

    • Reliability of the touch keyboard on the sign‑in screen, including when entering or changing a password.

    • Reliability of explorer.exe when closing the input switcher.

    • Performance when opening or navigating to clipboard history.

  • [Fonts] The Times New Roman font family is updated to improve the rendering of combining diacritical marks across Greek and Cyrillic scripts. This update provides more accurate and visually consistent text by addressing mark positioning issues. These changes improve readability, reduce rendering inconsistencies, and better support for global language users working with Greek and Cyrillic content.

  • [Task Scheduler] Task Scheduler now saves column width adjustments in task list view across sessions.

  • [Desktop icons] This update improves reliability of loading desktop app shortcuts.

  • [Microsoft Store] 

    • This update includes underlying changes that improve download performance and bandwidth usage.

    • This update improves error reporting when downloads fail due to Windows Update group policy settings being enabled.

  • [Reliability] This update improves Windows reliability on the sign-in and lock screens, in File Explorer, when using touch gestures on touchscreen devices, and when changing themes in Settings.

AI Components

This release updates the following AI components:

AI Component

Version

Image Search

1.2605.856.0

Content Extraction

1.2605.856.0

Semantic Analysis

1.2605.856.0

Settings Model

1.2605.856.0

Windows 11 servicing stack update (KB5092734)- 26100.8519

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. To learn more about SSUs, see Simplifying on-premises deployment of servicing stack updates.

Known issues in this update

Symptoms

After you install this update (KB5089549), some devices might fail to complete installation with error code 0x800f0922. This issue occurs on devices that have limited free space on the EFI System Partition (ESP), especially if it has 10 MB or less available.

What you might experience on affected devices:

  • The update installs successfully during the initial phases.

  • The installation fails during the restart phase at approximately 35–36% completion.

  • Windows then rolls back the update.

  • You may see the message: “Something didn’t go as planned. Undoing changes.”

  • The installation fails with error code 0x800f0922.

As a result of this issue, you might see log entries similar to the following in C:\Windows\Logs\CBS\CBS.log, indicating insufficient free space on the EFI System Partition:

  • SpaceCheck: Insufficient free space

  • ServicingBootFiles failed. Error = 0x70

  • SpaceCheck: <value> used by third-party/OEM files outside of Microsoft boot directories​​​​​​​

Workaround

Affected customers can use one of the following workarounds to mitigate this issue.

Option 1: Allow the update to install by modifying an ESP registry setting

Important: Editing the registry incorrectly can cause serious system problems. Always back up the registry before making any changes.

  1. Open Command Prompt as an administrator.

  2. Run the following command:​​​​​​​ reg add “HKLM\SYSTEM\CurrentControlSet\Control\Bfsvc /v EspPaddingPercent /t REG_DWORD /d 0 /f”​​​​​​​

  3. Restart the affected device.

  4. Retry installing the update.

Option 2: Mitigate the issue by using Known Issue Rollback (KIR)

This issue is mitigated using Known Issue Rollback (KIR). The resolution has already propagated automatically to consumer devices and non‑managed business devices. Restarting your Windows device might help the resolution apply more quickly.

Enterprise-managed devices

For devices where Windows updates are managed by IT departments, administrators can apply the mitigation by installing and configuring a special Group Policy. You can find the policy at Computer Configuration > Administrative Templates > <Group Policy name listed below>.

Group Policy download

 Windows 11, version 25H2 and Windows 11, version 24H2: KB5089549 260514_06221 Known Issue Rollback

Important: You must install and configure the Group Policy that matches your version of Windows to resolve this issue. You must also restart affected devices to apply the policy. This Group Policy temporarily disables the change that causes the issue.

For more information, seeHow to use Group Policy to deploy a Known Issue Rollback.

A resolution is in progress and will be included in a future Windows update. This documentation will be updated once the resolution is available.

How to get this update

Before you install this update

Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates.

Install this update

To install this update, use one of the following Windows and Microsoft release channels.

Available

Next Step

Included

Open Start  > Settings > Windows Update. > Advanced options > Optional updates. In the Optional updates available area, you will find the link to download and install available updates.

Check for optional updates

If you want to remove this update

Caution: Before you decide to remove this update, see Understanding the risks: Why you should not uninstall security updates.

To remove this update after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.

Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.

File information

For a list of the files provided in this update, download the file information for cumulative update 5089573.

For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5092734) - version 26100.8519.

Related topics

Windows monthly updates explained

Description of the standard terminology used for Microsoft software updates

Microsoft Store for Business and Education with Configuration Manager

Get updates for apps and games in Microsoft Store

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