The fix for this bug, which has persisted for about a decade, comes just after Microsoft ends Windows 10 support.

As Windows Latest highlights, Windows typically needs to boot into an offline servicing phase to apply a patch because it can not update files while they ...

If you see “Windows Installer Service could not be accessed” on Windows 11, the system cannot start the installer engine ... Start the service, re-register it, and repair core files to restore Windows ...