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Fix Windows Update Authentication Failed in Enterprise Setup - Windows Defender Not Working? Step-by-Step Fix Guide-How to Resolve Error 0xc004c003 After Changing PC Parts

Updated 2026-06-16 17:27:03developer-tools
Fix Windows Update Authentication Failed in Enterprise Setup - Windows Defender Not Working? Step-by-Step Fix Guide-How to Resolve Error 0xc004c003 After Changing PC Parts
Prepare
Execute
Validate
Document

Operational follow-up

  • Record the exact option, command, or setting that changed the result.
  • Keep a rollback note if the workflow affects shared files or team settings.

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