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Fixing Windows Security 502 Bad Gateway: Configuration Steps - Windows Firewall Blocking Windows Security: Fix-Clear DNS Cache to Fix Windows Terminal 504 Timeout

2026-06-13 20:06:32windows-fixes
Fixing Windows Security 502 Bad Gateway: Configuration Steps - Windows Firewall Blocking Windows Security: Fix-Clear DNS Cache to Fix Windows Terminal 504 Timeout

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.