TIL that at least in 2026, if a Windows non feature update takes more than 15 minutes to restart, the Windows system will revert the update.

Posted by jhs0108@reddit | sysadmin | View on Reddit | 10 comments

https://learn.microsoft.com/en-us/troubleshoot/windows-client/installing-updates-features-roles/windows-update-hangs-updates-uninstalled

The important line is this:

This issue occurs because the Trusted Installer service did not finish the installation process within the default time-out period of 15 minutes.

I'm speechless.