Microsoft has resolved two significant bugs that emerged from the August 2025 Patch Tuesday updates, which had caused issues with Windows 11 upgrades and disrupted reset and recovery tools in both Windows 10 and 11.
The problematic updates, specifically KB5063875, KB5063709, and KB5063877, not only blocked some Windows 11 devices from upgrading but also caused failures in the reset and recovery features across Windows 10 and 11.
These issues affected users on Windows 11 (22H2 and 23H2) and Windows 10 version 22H2, leading to frustrations among both end users and IT administrators. To address these issues, Microsoft released an out-of-band cumulative update on August 19, 2025. This update, referred to as KB5066189, aimed to restore functionality to the reset and recovery tools.
The August updates also triggered failures when attempting to use system reset features, including "Reset this PC" and "Fix problems using Windows Update." This problem affected various versions of Windows, including Windows 10 Enterprise LTSC. Microsoft reassured users that the out-of-band update would resolve these issues and suggested that users who faced problems with reset and recovery tools should install the optional update. It clarified that systems not affected by the previous issues could opt out of the installation.
Regarding upgrade errors on Windows 11, users encountered a failed installation error manifested as error code 0x8007007F during the upgrade process. This problem spanned devices running both Windows 11 versions and Windows Server products but was resolved automatically by Microsoft by August 15, 2025. The company noted that users would typically be able to resolve the upgrade errors by retrying the update process.
Overall, the August Patch Tuesday release was substantial, addressing 107 security vulnerabilities across various Microsoft products, including Windows, Exchange, and SharePoint.