Fix Windows Defender Port Already Allocated in Windows 11 - BitLocker Error: This Drive Is Not Compatible – Fix Guide-Resolve 0xc004c003 After Changing Motherboard

Updated 2026-06-15 19:38:57macos-help
Fix Windows Defender Port Already Allocated in Windows 11 - BitLocker Error: This Drive Is Not Compatible – Fix Guide-Resolve 0xc004c003 After Changing Motherboard
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.