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Fix pgAdmin Cannot Connect to PostgreSQL on Localhost - How to Resolve Error 0x8007042c in Windows Defender-Fix Windows Defender Not Starting Due to Invalid Config

2026-06-14 15:53:28developer-tools
Fix pgAdmin Cannot Connect to PostgreSQL on Localhost - How to Resolve Error 0x8007042c in Windows Defender-Fix Windows Defender Not Starting Due to Invalid Config

Final checklist

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