I am running DISM.exe /Online /Cleanup-image /Restorehealth and it got stuck on 62.3% complete. What do I do now?

DISM /Online /Cleanup-image /Restorehealth can legitimately take a long time and appear stuck at a specific percentage (such as 62.3%). The first step is to let it run to completion; this can take many minutes or longer depending on system health and performance.

If it has clearly failed or stopped progressing after a long time and exits with an error, use these steps:

1. Run DISM again with a known-good source
   • Open Command Prompt as administrator.
   • Use a repair source instead of Windows Update, for example:

          DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess
     

   • Replace C:\RepairSource\Windows with the actual path to a valid Windows installation or side-by-side store.
2. If DISM completes successfully
   • Run System File Checker to repair remaining issues:

          sfc /scannow
     

   • Wait for verification to reach 100% and then review the result.
3. If DISM continues to fail
   • Review the DISM/CBS logs under %SYSTEMROOT%\Logs\CBS\ (for example, CBS.log) to identify specific corrupt components.
   • For advanced cases, copy the correct versions of corrupted files into a folder such as C:\temp\Source, then rerun DISM with:

          DISM /Online /Cleanup-Image /RestoreHealth /Source:C:\temp\Source\ /LimitAccess
     

If DISM and SFC both complete successfully but problems persist (for example, with Windows Update), rerun Windows Update or follow the broader Windows update troubleshooting guidance.

References:

• Repair a Windows Image
• Use the System File Checker tool to repair missing or corrupted system files
• Troubleshoot problems updating Windows
• Fix Windows Update corruptions and installation failures
• Advanced guide to fix CBS corruption manually using DISM utility