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Fix Remote Desktop Proxy Authentication Failed Errors - How to Fix Defender Access Denied in Safe Mode-Fix 504 Gateway Timeout in Windows Terminal

Updated 2026-06-14 06:51:52office-tools
Fix Remote Desktop Proxy Authentication Failed Errors - How to Fix Defender Access Denied in Safe Mode-Fix 504 Gateway Timeout in Windows Terminal
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.