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How to Fix Windows Defender 404 Not Found Error - Resolve 0xc004c003 After Changing Motherboard-BitLocker Key Not Working After BIOS Update Fix

2026-06-13 15:03:22
How to Fix Windows Defender 404 Not Found Error - Resolve 0xc004c003 After Changing Motherboard-BitLocker Key Not Working After BIOS Update Fix

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.