Windows Heath utilizes two Microsoft Windows utilities; first, DISM takes an inventory of components, drivers, updates, and apps. Second is the SFC which scans for protected system files and replaces any corrupted ones with a cached copy located at %WinDir%\System32\dllcache.

When run, you are greeted with a popup that goes over the process, x out of this, and the main interface is displayed. Run DISM.exe /Online /Cleanup-image /Restorehealth to run the DISM command that scans for corruption and then repairs those issues -wait until it finishes. Then run SFC /scannow. As with any app that modifies system files, etc., it is recommended to create a restore point just in case there is an issue.

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How to Scan and Repair a Single File Using System File Checker

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