Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix VS Code Breakpoint Not Hit in Remote Development
You set a breakpoint in VS Code while working in a remote environment—SSH, container, or WSL—but ...
How to Fix pnpm Install Stuck at Resolving Dependencies
When pnpm install hangs on "Resolving dependencies", the process may appear stuck for min...
Fix Nginx Configuration Test Failure After Adding Proxy Pass
You add a proxy_pass directive to an Nginx server block, run nginx -t, ...
Windows 11 Update Stuck at 0% in Safe Mode: How to Fix
You boot into Safe Mode to troubleshoot a problem, but Windows Update shows 0% and won't budg...
Python Virtual Environment Not Activating on Ubuntu: Fixes
You've created a Python virtual environment on Ubuntu, but when you run source venv/bin...
Topic paths
Quick titles
Docker Desktop Engine Stuck: How to Fix ItFixing Node Version Conflicts with Global PackagesRemote Desktop Connection Failed 0x80004005 GuideDocker Desktop Engine Stops After Sleep: How to FixFixing Chrome STATUS_ACCESS_VIOLATION from ExtensionsProxy Blocking Chrome Sync? Step-by-Step GuideHow to Identify Extensions Causing ERR_CONNECTION_RESETFix Cloudflare Wildcard Subdomain and Root Domain Conflict