Situation: When running “DISM.exe /Online /Cleanup-image /Restorehealth” for fixing Windows update problem, you may receive this error: 0x800f081f
C:\Users\administrator>DISM.exe /Online /Cleanup-image /Restorehealth
Deployment Image Servicing and Management tool
Version: 10.0.18362.900
Image Version: 10.0.18363.1016
[===========================84.9%================= ]
[==========================100.0%==========================]
Error: 0x800f081f
The source files could not be found.
Use the “Source” option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.
The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log
Resolution: Download and install Windows update assistant.