Commands · Command
CommandWindows
sfc
sfc /scannowSystem File Checker — scans all protected Windows system files and repairs any that are corrupted or missing, restoring them from a cached copy.
// FLAGS
/scannowscan and repair immediately/verifyonlyscan without repairing/scanfilecheck a single file// EXAMPLE
sfc /scannow (run from an elevated Command Prompt) — scans the whole system, reporting "Windows Resource Protection did not find any integrity violations" if everything's clean.
// GOTCHA
sfc must run as Administrator, and if it can't fix something, the usual next step is DISM (/RestoreHealth) first, then sfc again — sfc alone can't repair a damaged component store.
// RELATED COMMANDS