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 Origin Certificate Not Showing in Dashboard: Fix
If you've generated a Cloudflare origin certificate but it doesn't appear in your dashboa...
How to Fix Docker 'No Space Left on Device' Error
If you've hit a no space left on device error while running Docker commands, it ...
Fix Firefox Secure Connection Failed Due to Proxy Settings
If you see "Secure Connection Failed" in Firefox and suspect a proxy is involved, you'...
Fixing pip Externally-Managed Environment Errors
If you see the error error: externally-managed-environment when running pip in...
Fix Discord Black Screen from Chrome Hardware Acceleration
Why Chrome Hardware Acceleration Causes Discord Black Screen
When Chrome uses hardware a...
Topic paths
Quick titles
Windows 10 Map Network Drive Access Denied: Troubleshooting GuideNginx Upstream Connection Refused on Port 443 FixHow to Fix DNS Probe Finished NXDOMAIN After Windows UpdateHow to Set Up a Wildcard Subdomain DNS Record in CloudflareHow to Stop Chrome Access Violation from AntivirusWindows 11 Bluetooth Troubleshooting: 10 Fixes to TryFix Windows 11 Stuck in Restart Loop After Blue ScreenDocker Disk Full: Clean Up Images and Free Space