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 notesChrome Won't Open After Update: Step-by-Step Fix
You updated Chrome, and now it won't open—no window, no error, just nothing. This is a common...
Fix Cloudflare Origin Certificate Not Trusted by Browser
You've set up Cloudflare with an origin certificate, but browsers show a warning that the cer...
How to Reset Microsoft Edge Sync Settings
If your bookmarks, passwords, or other data aren't syncing in Microsoft Edge, resetting the s...
Fixing 'Context Canceled' Errors During Docker Image Builds
When building a Docker image, you might see an error like context canceled or ...
How to Reset Chrome Sync: Step-by-Step Guide
Chrome sync keeps your bookmarks, passwords, history, and settings consistent across devices. But...
Issue queue
SitemapFix 'No Space Left on Device' in Docker Containers
Python Virtual Environment Not Activating: Common Fixes
Fix Git Changes Not Detected in VS Code Workspace
How to Fix pnpm Install Stuck at Resolving Dependencies
Docker Compose Env Var Override Not Working: Common Fixes
Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer
Windows 11 Update Broke Bluetooth? Here's How to Fix It
Docker Nginx 502 Bad Gateway Troubleshooting Ubuntu
Troubleshooting Windows Update 0x80070002
Cloudflare 522 Timeout: Disable Proxy Temporarily
Handling Special Characters in Docker Compose Environment Variables
Fix Windows 11 Blue Screen After Update Using Compatibility Mode
Python Virtual Environment Not Activating: Common Fixes
Fix Git Changes Not Detected in VS Code Workspace
How to Fix pnpm Install Stuck at Resolving Dependencies
Docker Compose Env Var Override Not Working: Common Fixes
Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer
Windows 11 Update Broke Bluetooth? Here's How to Fix It
Docker Nginx 502 Bad Gateway Troubleshooting Ubuntu
Troubleshooting Windows Update 0x80070002
Cloudflare 522 Timeout: Disable Proxy Temporarily
Handling Special Characters in Docker Compose Environment Variables
Fix Windows 11 Blue Screen After Update Using Compatibility Mode