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 npm ERR! enoent ENOENT: package.json Missing
You run npm install and get npm ERR! enoent ENOENT: no such file or directory,...
Firefox Secure Connection Failed: How to Fix
When Firefox shows 'Secure Connection Failed' or similar warnings like 'PR_END_OF_FIL...
Fix 'Permission Denied' When Deleting Files in VS Code
You try to delete a file or folder in VS Code's Explorer, but get an error: Permission ...
How to Reset Taskbar Icons in Windows 11: 4 Methods
If your Windows 11 taskbar icons are missing, showing generic file icons, or acting strangely, th...
Fix Windows 10 Cannot Access Shared Folder Error
You try to open a shared folder from another computer on your network, but Windows 10 shows an er...
Issue queue
SitemapFixing Nginx Upstream Connection Refused in Load Balancing
Python Requests Timeout Troubleshooting Guide
Git HTTP Timeout Settings: Step-by-Step Guide
Troubleshooting npm run build Failures
How to Fix Cloudflare Error 521: Origin Server Unreachable
Postgres in Docker: Volume Permission Denied Guide
How to Open an Elevated Terminal in VS Code
How to Resolve nginx -t Rewrite Failures
Fix Windows Security App Not Working
Troubleshooting DNS Probe Finished NXDOMAIN on Custom Servers
Fix Docker Build Context Canceled on Windows 10
No Internet on Windows 11 Despite WiFi Connection
Python Requests Timeout Troubleshooting Guide
Git HTTP Timeout Settings: Step-by-Step Guide
Troubleshooting npm run build Failures
How to Fix Cloudflare Error 521: Origin Server Unreachable
Postgres in Docker: Volume Permission Denied Guide
How to Open an Elevated Terminal in VS Code
How to Resolve nginx -t Rewrite Failures
Fix Windows Security App Not Working
Troubleshooting DNS Probe Finished NXDOMAIN on Custom Servers
Fix Docker Build Context Canceled on Windows 10
No Internet on Windows 11 Despite WiFi Connection