Windows 11

Repair Windows without reinstalling

The right repair depends on what is broken.

TRY THIS FIRST

Check the component store first

Save your work, then open PowerShell as administrator and run the check below.

Diagnostic check · Administrator required · Writes logs; does not repair

PowerShell

DISM.exe /Online /Cleanup-Image /ScanHealth

Result: Use what you find to choose the next step.

Still not working?

If corruption is repairable, use the detailed repair sequence. Repair commands change system files and have no simple undo command; keep a backup first.

Check the result: Repeat the original task after making one relevant change. If the problem returns, keep the exact message and time.

More detail →

Sources & page details

Hanki's detailed guide · Reviewed 2026-09-26

Choose the entry that matches where the error appeared. A code alone does not identify every cause. Commands are copied for you to review; this page does not run them.