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Windows Defender Port Already Allocated Fix Guide - Fix Windows Security Migration Error 0x80070005-BitLocker 502 Bad Gateway: Causes and Solutions

Updated 2026-06-13 20:36:36developer-tools
Windows Defender Port Already Allocated Fix Guide - Fix Windows Security Migration Error 0x80070005-BitLocker 502 Bad Gateway: Causes and Solutions
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.