Yesterday my SFC /Scannow command, run from Powershell Admin found corrupt files it was unable to fix. I expected The Dism /Online /Cleanup-Image /Restorehealth command to take care of it. Instead it reported "error 0x800f0906" and said it lacked the files
to repair the problem.
I looked up error 0x800f0906 in a Dism command. It suggested a repair that started and stopped services, a
net stop wuauserv
cd %systemroot%\SoftwareDistribution
ren Download Download.old
net start wuauserv
net stop bits
net start bits
net stop cryptsvc
cd %systemroot%\system32
ren catroot2 catroot2old
net start cryptsvc
It also suggested Windows Update was malfunctioning and that I should fix it from The Troubleshooting screen. I did, and SFC /Scannow came up clean and Dism /Online /Cleanup-Image /RestoreHealth reported error code 0x800f081f instead.
I then used The Dism /Online /Cleanup-Image /StartComponentCleanup and The Dism /Online /Cleanup-Image /StartComponentCleanup /ResetBase Commands. I then used The Dism /Online /Cleanup-Image /ScanHealth Command and it reported "No component store corruption
detected." I thought I was in the clear, but Dism /Online /Cleanup-Image /RestoreHealth keeps reporting it found and repaired files and The Troubleshooter keeps reporting it's fixed problems in Windows Update. Probably not the biggest deal in the Windows
world but a little unsettling.