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Fix PostgreSQL Connection Refused Due to Firewall - Troubleshooting PowerShell Error 407 Proxy-Resolving npm Dependency Conflicts After an Update

Updated 2026-06-13 17:17:01cloud-software
Fix PostgreSQL Connection Refused Due to Firewall - Troubleshooting PowerShell Error 407 Proxy-Resolving npm Dependency Conflicts After an Update
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.