Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Update Service Not Running in Windows 11: Fix It
If Windows Update won't start and you see an error like "Windows Update service is not ru...
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
Docker Compose Port Already Allocated: Fixes & Checks
When you run docker-compose up and see an error like Error starting userland p...
Fix Docker Nginx 502 Bad Gateway with MySQL
You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...
Docker Build Context Canceled: Causes and Fixes
When running docker build, you might see an error like build context canceled<...
Topic paths
Quick titles
Windows Remote Desktop Broken After Update? Fix ItHow to Fix Docker Desktop Not Starting on BootHow to Fix Windows 11 Update Stuck at 0% Using Built-in ToolsCloudflare 522 Error Troubleshooting GuideFix Nginx Redirect Loop ConfigurationPython Dependency Conflict Checklist: Diagnose & FixTroubleshooting Nginx Connection Refused ErrorFix Externally Managed Error: Create Virtual Environment