SA OS repair will be tried once data is backed up by user.
I have 2 computers, both Dell Optiplex 3060 desktops part of a Windows domain, with Windows  Pro 10.0.18363 that consistently fail to update.   I have tried updates via the Settings check for updates and manually via Microsoft download Media Creation Tool as well as ISO.  Also Dell Command update indicates all drivers are current. The latest failure recorded the event log message:"Installation Failure: Windows failed to install the following update with error 0x80242016: Feature update to Windows 10, version 21H2"Some of the things I have tried include:clean bootunplugged external USB devicesrenamed Software Distribution folderWindows Update troubleshootersfc /scannowDISM /online commands for /cleanup-image and /restoreHealthreset Windows Update componentsHas anyone else experienced this and found a solution? 
Windows 10 fails to update