clean-up winSxS components
https://win10.guru/dism-analyzecomponentstore-and-startcomponentcleanup/

reparation d’integrite systeme

DISM.exe /Online /Cleanup-image /Scanhealth 
DISM.exe /Online /Cleanup-image /Restorehealth

si update corrompu, a faire a partir des sources dvd ou iso

Note: Replace the C:\RepairSource\Windows placeholder with the location of your repair source. For more information about using the DISM tool to repair Windows, reference Repair a Windows Image.

sfc /scannow
%WinDir%\Logs\CBS\CBS.log

findstr /c: »[SR] » %windir%\Logs\CBS\CBS.log> »%userprofile%\Desktop\sfcdetails.txt »

verifier dll a remplacer ou manquant
(takeown, icacls, copy)
https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system