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 notesDocker Compose Env Variable Not Available in Container: Fix
You define an environment variable in your docker-compose.yml file, but when you run...
Cloudflare Wildcard Subdomain CNAME Setup Guide
If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...
Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking
You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...
Fix Nginx 502 Bad Gateway in Docker Containers
An Nginx 502 Bad Gateway error when proxying to a Docker container usually means Nginx cannot rea...
Fix npm run build TypeScript Compilation Errors
You run npm run build and get a wall of TypeScript errors. The build fails, and you&...
Issue queue
SitemapFixing Python Memory Errors When Processing Large Files in Parts
Docker Pull Unauthorized Access Denied Fix
Troubleshoot Windows Search Indexing Service
Troubleshoot VSCode Terminal Git Bash Issue
Fix Cloudflare DNS Propagation Taking Too Long
Fix pip Externally Managed Environment Error
Troubleshooting Docker Compose Env Variable Issues
How to Avoid Git Timeout with Big Repositories
Reset Git Credentials for VSCode Error
How to Fix 'python' Not Recognized After Reinstalling Python
How to Fix npm Permission Issues in VS Code
Manual index.lock Deletion in Git
Docker Pull Unauthorized Access Denied Fix
Troubleshoot Windows Search Indexing Service
Troubleshoot VSCode Terminal Git Bash Issue
Fix Cloudflare DNS Propagation Taking Too Long
Fix pip Externally Managed Environment Error
Troubleshooting Docker Compose Env Variable Issues
How to Avoid Git Timeout with Big Repositories
Reset Git Credentials for VSCode Error
How to Fix 'python' Not Recognized After Reinstalling Python
How to Fix npm Permission Issues in VS Code
Manual index.lock Deletion in Git