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 listHow to Generate a Cloudflare Origin Certificate
If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...
Fix VS Code Source Control Not Detecting Changes After Branch Switch
After switching branches in Git, VS Code's Source Control view sometimes stops showing change...
Windows 11 Update Stuck at 0%: How to Fix
You start a Windows Update, and the progress bar sits at 0% for ten minutes, an hour, or longer. ...
Fix Chrome ERR_CONNECTION_RESET After Router Reboot
If you see ERR_CONNECTION_RESET in Chrome after rebooting your router, you'r...
Docker Compose ENV Not Passed to Entrypoint: Fix
You define an environment variable in your docker-compose.yml, but when the containe...
Topic paths
Quick titles
Windows 10 Explorer.exe Keeps Crashing? Fix It NowHow to Fix Python UnicodeDecodeError: 'utf-8' Codec Can't Decode ByteResolve Chrome NET::ERR_CERT_AUTHORITY_INVALID Due to Date/TimeHow to Fix SSL Certificate Error in Chrome Caused by AntivirusHow to Fix Node.js OOM in Test SuitesFix Docker Volume Permission Denied in ContainersWindows Explorer Crashing After Update – FixTroubleshooting Explorer Crashes After New Program Installation