If any missing or damaged system files create a problem System File Checker if very helpful to fix. SFC command is an easy solution to fix some windows related problems. Open Command prompt as Administrator then type the below commands one by one and hit enter to execute. Deleting windows update cache files is another solution that may just work for you. If you’re still having trouble after running the troubleshooter, performing the same actions manually may help where the troubleshooter didn’t.

Run the Build in Windows update troubleshooter, this will detect and fix the problems that prevent windows update to install.

Whenever you face Windows update installation problems.