Fix for Windows 21H2 update error: 0xc1900401

if you are also getting error 0xc1900401 while trying to update windows to 21H2 feature update, you can try to run this command as an admin:

Command:
SFC scannow .

Concluzion: Fix for Windows 21H2 update error: 0xc1900401 – 0xc1900401,windows update error,21h2 update error,failed to download update,windows update fix

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