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 listChrome Black Screen Instead of White: Quick Fixes
You open Chrome and instead of the usual white background, you see a black screen. Tabs load, but...
BitLocker 502 Bad Gateway Sync Issue: Practical Fixes
If you're seeing a 502 Bad Gateway error when syncing BitLocker recovery keys or policies, the pr...
PowerShell Version Mismatch Between Client and Server: Fixes
When you run a PowerShell script or command against a remote server, you might see errors about v...
GitLab Runner Not Picking Up Jobs: Common Fixes
You've set up a GitLab Runner, but jobs sit in the queue with no signs of being picked up. This g...
Fix Windows Defender Port Already Allocated Registry Error
When Windows Defender fails to start or update, you might see an error like 'port already allocat...
Topic paths
Quick titles
Resolve Chrome Profile Download Error macOSSystemd Service Setup Checklist for BeginnersResolve Visual Studio Installer Finalizing HangHow to Fix Windows Activation by Clearing or Resetting CacheWindows Update Version Mismatch Error FixHow to Fix Chrome Profile Rate Limit ErrorTroubleshooting Remote Desktop Hang on ConnectResolve Chrome Error 0x80070005 Installation Failed