Microsoft has acknowledged a significant bug affecting Windows 11 and Windows 10 PCs that may prevent users from successfully resetting or recovering their systems. An out-of-band update, KB5066189, was released to address this issue. Users experiencing failures with the "Reset my PC" feature or the "Fix problems using Windows Update" option are advised to install this update. The reset issue does not affect systems running Windows 11 version 24H2, although some users have reported that SSDs and HDDs may become invisible to the operating system in this version, making data unrecoverable.