Forum Discussion
Paul_Steel
Jun 20, 2026Copper Contributor
Unable to use RestoreHealth in DISM
Hi all, I had a windows update fail with 0x800f0831 which indicates corrup files. So I ran the DISM commands DISM /ONLINE /CLEANUP-IMAGE /SCANHEALTHD DISM /ONLINE /CLEANUP-IMAGE /CHECKHEALTH ...
joecouch
Jun 20, 2026Copper Contributor
It could be a syntax issue. Try specifying the source as:
DISM /Online /Cleanup-Image /RestoreHealth /Source:wim:H:\Sources\install.wim:6 /LimitAccess
Also make sure the ISO/build version exactly matches the installed Windows version. A mismatch between the source image and your current build can cause the "source files could not be found" error.