Windows Repair

SFC vs DISM: Which Command Should You Run First?

Compare SFC and DISM for Windows repair and learn a safe order for fixing corrupted system files.

SFC and DISM are both Windows repair tools, but they repair different things. SFC checks protected system files. DISM repairs the component store that SFC may rely on.

Simple rule

If you want a quick first scan, run SFC. If SFC fails or corruption seems deeper, run DISM and then SFC again.

Safe repair workflow

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

Risk level

These are safe built-in repair commands when run correctly. They require Administrator permission and should not delete personal files.

When not to use them

Do not use random repair scripts that combine SFC/DISM with risky registry edits, service disabling, or security bypass commands.