Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Fix Cloudflare 522 Error (Firewall Blocking)
If you see a Cloudflare 522 error, the connection between Cloudflare and your origin server timed...
How to Resolve Cloudflare 522 Timeout Error
When you see a Cloudflare 522 timeout error, it means Cloudflare successfully connected to your o...
Fix VS Code Source Control Not Detecting File Modifications
You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...
Chrome Startup Crash Due to Sandboxing: How to Fix
You open Chrome, it starts to load, then crashes before the window fully appears. This can happen...
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
You run git clone https://example.com/repo.git and get:
fatal: unable to acc...
Issue queue
SitemapTroubleshooting RDP Connectivity Problems
Docker Build Canceled: Verbose Logging Fix
Git SSL Error After Update: Local Issuer Certificate Fix
Fix Missing Taskbar Icons in Windows Notification Area
Fix Cloudflare DNS Propagation for Subdomains
Troubleshoot Grayed Out Chrome Extensions
Resolve Chrome Certificate Error Post-Update
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
How to Stop Docker Container from Exiting on Start
Git Clone Timeout with SSH: Common Fixes
Nginx PHP-FPM Connection Refused: How to Fix
Node Sass Build Failed: Reinstall and Fix Guide
Docker Build Canceled: Verbose Logging Fix
Git SSL Error After Update: Local Issuer Certificate Fix
Fix Missing Taskbar Icons in Windows Notification Area
Fix Cloudflare DNS Propagation for Subdomains
Troubleshoot Grayed Out Chrome Extensions
Resolve Chrome Certificate Error Post-Update
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
How to Stop Docker Container from Exiting on Start
Git Clone Timeout with SSH: Common Fixes
Nginx PHP-FPM Connection Refused: How to Fix
Node Sass Build Failed: Reinstall and Fix Guide