Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listCloudflare SSL Full Strict Configuration Checklist
If you see 'This website is not available' or a redirect loop after enabling Cloudflare S...
Fix Windows Update Error 0x80070005: Cannot Install Updates
You try to install Windows updates but get error 0x80070005 with the message "Cannot install ...
How to Fix Nginx Redirect Loop in Server Block
You set up a server block in Nginx, but now the browser keeps redirecting—http to https, or www t...
Python Requests Timeout Not Working: Fixes & Checks
You set a timeout in requests.get(url, timeout=5), but the request hangs for minutes...
Fixing NGINX Upstream Connection Refused SSL Errors
When NGINX logs upstream connection refused for an SSL backend, it usually means the...
Topic paths
Quick titles
How to Fix Windows 11 Installation Assistant Stuck at 99%Change Remote URL in GitVSCode Terminal Not Visible: Troubleshooting StepsNginx Syntax Error: Common Causes and SolutionsResolving ESLint errors during npm buildTroubleshoot Windows Update Service for System RestoreResolve Git SSL Error 'unable to get local issuer certificate'How to Fix Edge Sync Permission Denied Error