Command reference

DISM /Online /Cleanup-Image /RestoreHealth

Scan and repair the component store of the running Windows installation.

Syntax

DISM /Online /Cleanup-Image /RestoreHealth

Purpose: Repairs servicing-image corruption that can prevent Windows Update or SFC from obtaining sound system files.
Administrator: Yes — run from an elevated terminal.
Risk: Moderate; DISM changes the component store, may use Windows Update as a source, and must not be interrupted.
Windows support: Windows 11 and Windows 10

When to use it

SFC reports files it cannot repair
Windows servicing or several built-in components show corruption symptoms

When not to use it

Power is unreliable or a restart is imminent
Storage diagnostics indicate a failing drive
A single third-party app is the only fault

Steps

Back up work, connect AC power, and confirm internet access if Windows Update will be the source.
Run the command and let it finish even if the percentage pauses.
After a successful restore, run sfc /scannow, restart, and retest the original symptom.

Expected result

DISM reports that the restore operation completed successfully, or returns a specific source or servicing error for separate diagnosis.

Limitations

It may need Windows Update or installation media matching the installed Windows release.
It does not repair applications, user data, device firmware, or hardware.