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 listChrome Memory Optimization Settings: Reduce RAM Usage
Chrome is known for eating RAM, especially with many tabs open. If your system slows down or you ...
Fix Windows 11 Update Stuck at 0% – BITS Service Issues
You click 'Check for updates' in Windows 11, and it sits at 0% for minutes or hours. Ofte...
How to Fix Firefox Secure Connection Failed Certificate Error
You see a full-page error in Firefox: Secure Connection Failed with a message li...
Fix Nginx Redirect Loop After SSL Certificate Install
You installed an SSL certificate, and now your site redirects in a loop. The browser shows 'E...
Fix Cloudflare Wildcard Subdomain Page Rule Not Working
You set up a wildcard subdomain page rule in Cloudflare—like * .example.com/*—but it...
Topic paths
Quick titles
Fix Git SSL Certificate Problem with Proxy: Unable to Get Local IssuerDocker Desktop Engine Stuck: How to Fix ItGit Clone Fails with Timeout in VS CodeHow to Reset Windows Security App SettingsDocker Network Not Found Despite Existing: FixFix PyCharm Virtual Environment Not ActivatingWindows Security App Reset StepsEdge Browser DNS Probe Finished NXDOMAIN – Quick Fixes