zhizhu
Home / office-tools / Fix PostgreSQL Connection Refused on Port 5432 - Windows Defender Keeps Restarting – Troubleshooting Guide-Ubuntu apt update GPG error fix

Fix PostgreSQL Connection Refused on Port 5432 - Windows Defender Keeps Restarting – Troubleshooting Guide-Ubuntu apt update GPG error fix

Updated 2026-06-13 14:00:00office-tools
Fix PostgreSQL Connection Refused on Port 5432 - Windows Defender Keeps Restarting – Troubleshooting Guide-Ubuntu apt update GPG 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.