Microsoft released emergency patches, known as "out-of-band" updates, to address critical issues with its operating systems. The updates include KB5066189 for Windows 11 versions 23H2 and 22H2, KB5066188 for Windows 10 versions 22H2 and 21H2, and KB5066187 for Windows 10 LTSC 2019. These updates fix problems caused by the August 2025 security update, which led to installation failures (error code 0x8007007F) and disrupted reset and restore functionalities on Windows devices. The updates are available through Windows Update, but users must manually select and install the appropriate patch.