A Windows 10 workstation seems to be unstable. A technician wants to check if system files have not been changed. Which command scans and fixes corrupted system files?

A great tool for troubleshooting unstable systems is System File Checker (SFC). Sfc /scannow will scan for and corrects problems with protected system files. The command sfc /scanfix is invalid. Sfc /scanfile merely checks the integrity of the specified file and fixes it. Sfc /verifyonly checks files but does not fix errors that it discovers.