Wait for completion (up to 20 minutes). If DISM fails with source errors, you will need a Windows installation ISO – mount it and run:

The error code typically indicates that a file (in this case, winsetup.dll ) is not a valid Win32 application, often because it is corrupt , missing, or has an architecture mismatch. This usually happens during a Windows installation or upgrade when the media creation process fails to verify the file correctly. 1. Recreate your installation media