What to do first
Read the exact SFC result, run DISM first when repair files are missing, restart, and run sfc /scannow again. If corruption remains, save the CBS log details before moving to recovery options.
System repair
SFC Scannow Found Corrupt Files? What to Do Next
When System File Checker reports corrupted files, the result is a clue—not a reason to delete system folders or reinstall Windows immediately.
Quick answer
Start with the reversible checks
Why it happens
Why this problem appears
SFC compares protected Windows files with a known-good component store. If that store is damaged too, DISM repairs the source that SFC uses.
Step by step
Safe troubleshooting order
- Open Windows Terminal or Command Prompt as administrator.
- Run DISM /Online /Cleanup-Image /RestoreHealth and allow it to finish.
- Restart Windows, then run sfc /scannow again.
- If SFC still cannot repair files, note whether it says the source files could not be found and review the CBS log.
- Use Windows Update repair or recovery only after protecting important files and checking whether the issue affects normal use.
Safety note
Know when to stop
Protect important files before resets, driver removal, account changes, or recovery operations. If the symptom points to hardware, repeated software changes can make diagnosis harder.
FAQ
Should I run SFC or DISM first?
If SFC reports that it could not repair files, run DISM first, restart, and then run SFC again so it can use the repaired component store.
Does an SFC error mean my personal files are damaged?
Usually no. SFC checks protected Windows system files. Still, keep a current backup before deeper repair or recovery work.