This issue began when I launched an aggressive campaign to get City PCs up to Windows 10 Feature Release 22H2. In 98% of upgrades the user's PC will install the update and experience a 2 - 5 minute completion relaunch. In a small number of updates for some reason the completion relaunch is taking an extraordinarily long time. In every case, if the PC is allowed to finish it will eventually return to a usable state with 22H2.  During the final stages of the 22H2 install, the PC may reboot and not be fully up to 22H2. In this state the PC will fail to load the Group Policy Update Service. Upon full update, the service will be updated and function normally.