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Fix Command Prompt Authentication Failed in Windows 10 - Fix RDP Port Already Allocated 0x80004005-Windows Defender Connection Error Fix

Updated 2026-06-14 02:17:05developer-tools
Fix Command Prompt Authentication Failed in Windows 10 - Fix RDP Port Already Allocated 0x80004005-Windows Defender Connection Error Fix
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.