HankiHow to Use DISM RestoreHealth in Windows 11
DISM is one of the most powerful repair utilities included with Windows.
DISM stands for Deployment Image Servicing and Management.
Although it has many administrative uses, the command most home users encounter is:
DISM /Online /Cleanup-Image /RestoreHealth
Before repair commands: save your work, keep a backup of important files, and use Terminal or Command Prompt as Administrator. These commands change Windows files; they are not read-only diagnostics. /Online targets the Windows installation currently running, not an offline installation in recovery.
What RestoreHealth Does
Windows keeps a component store containing files used to maintain and repair the operating system.
If this store becomes corrupted, Windows Update and System File Checker can start failing.
DISM examines the Windows image and attempts to repair damaged components.
Run DISM as Administrator
Open Windows Terminal as Administrator and run:
DISM /Online /Cleanup-Image /RestoreHealth
The process may appear to pause at certain percentages.
That does not necessarily mean the command has frozen.
Allow it to complete.
Run SFC Afterwards
Once DISM completes successfully, run:
sfc /scannow
This is a useful sequence because DISM repairs the component store while SFC repairs protected Windows system files using that store.
When DISM Can Help
DISM is useful when you experience:
- SFC failing to repair files
- corrupted Windows components
- Windows Update errors
- servicing problems
- damaged system files after an interrupted update
DISM Is Not a Universal Fix
DISM does not repair every Windows problem.
It is unlikely to fix:
- failing RAM
- overheating
- unstable overclocks
- failing SSDs
- defective GPUs
- problematic third-party software
If Windows continues crashing after SFC and DISM complete successfully, hardware and driver diagnostics may be the next step.
References
Questions about How to Use DISM RestoreHealth in Windows 11
What does DISM RestoreHealth repair?
It checks and repairs the Windows component store, which Windows uses to service and repair system files. It is not a general repair for unrelated driver or hardware faults.
Should I run SFC after DISM?
If you are investigating possible system-file damage, run DISM first and then SFC to check protected system files. Record the messages and restart if Windows asks.