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Fix Windows Defender Invalid Configuration Error 0x800705b4 - Windows Defender 502 Bad Gateway: Troubleshooting Checklist-PostgreSQL Password Authentication Error Fix

2026-06-13 14:18:37
Fix Windows Defender Invalid Configuration Error 0x800705b4 - Windows Defender 502 Bad Gateway: Troubleshooting Checklist-PostgreSQL Password Authentication Error Fix

Result check

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