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Find information on known issues and the status of the Windows 11, version 24H2 rollout. For immediate help with Windows update issues, click here if you are using a Windows device to open the Get Help app 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 March 27, 2025
Windows 11, version 24H2 Home and Pro editions will reach end of updates on October 13, 2026. Devices running these editions will no longer receive fixes for known issues, time zone updates, technical support, or monthly security and preview updates containing protections from the latest security threats.
Windows 11, version 25H2 is the latest version of Windows available.
Devices running Home and Pro editions of Windows 11, version 24H2 that are not managed by IT departments will receive the Windows 11, version 25H2 update automatically. You can choose the time to restart your device or postpone the update.
If you have an eligible Windows 10 or Windows 11 device, you can check whether the update is available by selecting Settings > Windows Update and selecting Check for updates. If your device is ready for the update, you’ll see the option to Download and install Windows 11, version 25H2.
For more details, watch the How to get the Windows 11 2025 Update video.
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).
| Summary | Originating update | Status | Last updated |
|---|---|---|---|
| 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 12:15 PT |
Issue details
May 2026
May 2026 security update might fail to install with error 0x800f0922
| Status | Originating update | History |
|---|---|---|
| Resolved KB5089573 | OS Build 26100.8457 KB5089549 2026-05-12 | Resolved: 2026-05-26, 14:00 PT Opened: 2026-05-15, 14:28 PT |
After installing the May 2026 Windows security update (KB5089549), some devices might experience installation failures with error code 0x800f0922. This issue affects devices with limited free space on the EFI System Partition (ESP), especially when the device has 10 MB or less space available. On affected devices, the installation might proceed through the initial phases but fail during the reboot phase at approximately 35–36% completion. The installation then rolls back with error code, and users might see the message: “Something didn’t go as planned. Undoing changes.”
Resulting from this issue, users may observe 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”
Resolution: This issue was resolved by Windows updates released May 26, 2026 (KB5089573), and later. We recommend you install the latest update for your device as it contains important improvements and issue resolutions, including this one.
If you install an update released May 26, 2026 (KB5089573) or later, you do not need to use a workaround for this issue. If you are using an update released before this date, and are experiencing this issue, you can use the following workaround.
Workaround: Affected customers might apply one of the following workarounds to mitigate the issue:
1. Allow update installation by modifying ESP registry setting
⚠️ Important: Editing the registry incorrectly can cause system issues. Always back up the registry before making changes.
- Open Command Prompt as Administrator
- Run the following command:
- reg add "HKLM\SYSTEM\CurrentControlSet\Control\Bfsvc" /v EspPaddingPercent /t REG_DWORD /d 0 /f
- Restart the affected device to apply the change and then retry installing the update.
2. Mitigate through 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 to your device faster.
For enterprise-managed devices where Windows updates are managed by IT departments, IT administrators can apply the KIR by installing and configuring the Group policy listed below. The special Group Policy can be found in Computer Configuration > Administrative Templates > <Group Policy name listed below>.
Group Policy downloads with Group Policy name:
- Download for Windows 11, version 25H2 and Windows 11, version 24H2: KB5089549 260514_06221 Known Issue Rollback
Important: You will need to install and configure the Group Policy for your version of Windows to resolve this issue. You will also need to restart your device(s) to apply the group policy setting. Note that the Group Policy will temporarily disable the change causing this issue.
For information on deploying and configuring this special Group Policy, please see How to use Group Policy to deploy a Known Issue Rollback.
Affected versions:
- Client: Windows 11, version 25H2; Windows 11, version 24 H2
- Server: none
Report a problem with Windows updates
To report an issue to Microsoft at any time, use the Feedback Hub app. To learn more, see Send feedback to Microsoft with the Feedback Hub app.
Need help with Windows updates?
Search, browse, or ask a question on the Microsoft Support Community. If you are an IT pro supporting an organization, visit Windows release health on the Microsoft 365 admin center for additional details.
For direct help with your home PC, use the Get Help app in Windows or contact Microsoft Support. Organizations can request immediate support through Support for business.
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