I'm running Windows 10 Pro Version 10.0.19045 Build 19045 and are experiencing error 0x8007007e when installing an update.
Running scannow and restoreheal shows the following:
"
C:\Windows\system32>sfc /scannow
Beginning system scan. This process will take some time.
Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection found corrupt files but was unable to fix some of them.
For online repairs, details are included in the CBS log file located at
windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. For offline
repairs, details are included in the log file provided by the /OFFLOGFILE flag.
C:\Windows\system32>Dism /Online /Cleanup-Image /RestoreHealth
Deployment Image Servicing and Management tool
Version: 10.0.19041.3636
Image Version: 10.0.19045.4717
[==========================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
Configure a Windows Repair Source.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
"
