- KB5066189 for Windows 11 and KB5066188 for Windows 10 are Out-of-band updates released on August 19, 2025, to fix reset and recovery bugs introduced by the August Patch Tuesday updates.
- The problem prevented users from using Reset this PC, Recovery tools, and RemoteWipe CSP.
- Windows 11 24H2 was not affected.
Microsoft is now releasing the Out-of-band (OOB) update KB5066189 as build 22631.5771 and 22621.5771 for Windows 11 23H2 and 22H2 to address a bug with the reset and recovery features introduced with the August 2025 update. Windows 11 24H2 is not affected by this bug.
In addition, the company is also making available the Out-of-band update KB5066188 as build 19045.6218 and 19044.6218 for Windows 10 22H2 and 21H2 to address the same reset and recovery bug introduced with the Patch Tuesday for August 2025.
On August 12, 2025, the software giant began the rollout of the latest Patch Tuesday update for every supported version of the operating system with new features and security fixes. However, soon after, a small number of users started experiencing issues trying to use the “Reset this PC” and “Fix problems using Windows Update” features from the “Recovery” settings. This problem also affected the RemoteWipe CSP feature.
Now, the company is quickly making available the Out-of-band update KB5066189 and KB5066188 to address the issue on affected devices.
Windows 11 update KB5066189
- Release date: August 19, 2025.
- Builds: 22631.5771 (23H2), 22621.5771 (22H2).
- Purpose: Fixes reset and recovery bugs introduced with the August 12, 2025, Patch Tuesday update.
- Affected versions: Windows 11 22H2 and 23H2.
- Not affected: Windows 11 24H2, Windows Server editions, LTSC releases.
Windows 10 update KB5066188
- Release date: August 19, 2025.
- Builds: 19045.6218 (22H2), 19044.6218 (21H2).
- Purpose: Fixes reset and recovery bugs caused by the August 2025 cumulative update.
- Affected versions: Windows 10 21H2 and 22H2.
- Not affected: Windows Server.
If you have a computer that was affected by this bug, you should install this update immediately by going to Settings > Windows Update, and clicking the “Check for updates” button.
Alternatively, you can download and install the update KB5066189 from the Microsoft Update Catalog for Windows 11. If you’re still on Windows 10, you can download the update KB5066188 here.
As a reminder, if you have a device still running Windows 11 23H2, the support for this release will end on November 11, 2025. If you want to maintain your computer support, it’s recommended to upgrade to Windows 11 24H2 as soon as possible.
Also, the support for Windows 10 will end on October 14, 2025, and after this date, the operating system will no longer receive maintenance or security updates, and the company will stop providing technical support.
If you have a computer still on Windows 10, it’s recommended to upgrade to Windows 11. Alternatively, you can also enroll your device in the Extended Security Updates (ESU) program to continue receiving critical updates until October 2026.
Out-of-band (OOB) updates explained
Out-of-band updates are emergency patches released outside the regular monthly schedule. Microsoft issues them to address urgent problems (such as newly discovered security flaws or critical bugs) that can’t wait for the next Patch Tuesday.
These updates are cumulative, meaning they include all previous fixes (security and non-security) plus the new targeted resolution.
Mauro Huculak is a Windows How-To Expert and founder of Pureinfotech in 2010. With over 22 years as a technology writer and IT Specialist, Mauro specializes in Windows, software, and cross-platform systems such as Linux, Android, and macOS.
Certifications: Microsoft Certified Solutions Associate (MCSA), Cisco Certified Network Professional (CCNP), VMware Certified Professional (VCP), and CompTIA A+ and Network+.
Mauro is a recognized Microsoft MVP and has also been a long-time contributor to Windows Central.
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