Fix PostgreSQL Connection Refused on Port 5432
When you see psql: error: connection to server at ... failed: Connection refused on ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Visual Studio Installer Stuck on Preparing Files
You start a Visual Studio installation or update, and the installer sits on "Preparing files" for...
Change Remote Desktop Listening Port to Avoid Conflicts
If you cannot connect to a remote computer because another application is using port 3389, or you...
Fix Task Scheduler Port Already Allocated Error
When you see 'port already allocated' in Task Scheduler, it usually means a scheduled task is try...
MongoDB Authentication Failed: Causes and Fixes
You try to connect to MongoDB and get "Authentication failed" or similar error. This usually happ...
Fix PuTTY Connection Refused: Check SSH Service
When you see 'Connection refused' in PuTTY, it usually means the SSH server on the remote machine...
Topic paths
Quick titles
How to Resolve RDP Invalid Configuration Error 0x4Chrome Download Error: Permission Denied on Mac – FixSetting Rate Limits in Task SchedulerWindows Terminal Update Breaks Shortcut: 404 FixOutlook Token Expired When Sending Email: Fixes & ChecksFix OneDrive Sync Paused on Windows 11Windows Defender Login Loop After Update: How to FixCommand Prompt Sync Problems: Causes and Fixes