Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesCloudflare 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 Clear Edge Sync Cache and Resolve Sync Issues
If your Microsoft Edge browser is not syncing bookmarks, passwords, or settings correctly, the sy...
How to Fix Windows Search Indexing Slow Performance
If Windows Search is taking forever to index files or seems to hang, the problem is often a bloat...
Cloudflare DNS Not Propagating After SSL Certificate Change
You changed an SSL certificate in Cloudflare, but DNS changes aren't showing up. This is a co...
How to Install Python Packages Without Permission Denied Errors
You try to install a Python package with pip install somepackage and get a Per...
Issue queue
SitemapResolve npm EACCES Error on Mac
Fix npm install Incompatible Node Version Errors
Setting Up Git LFS for Large Binary Files
Fix 'nginx configuration test failed invalid parameter'
Fix ERR_CONNECTION_RESET Caused by Chrome Extensions
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
Fix Windows Update Error 0x80070002 Due to Network Issues
Fix Git Remote Origin Already Exists Error macOS
How to Resolve Windows Update Error 0x800f081f
How to Resolve Windows Update Error 0x800f081f
Windows 11 Blue Screen After Update Fix with SFC
How to Resolve Git Clone Timeout on GitHub Enterprise
Fix npm install Incompatible Node Version Errors
Setting Up Git LFS for Large Binary Files
Fix 'nginx configuration test failed invalid parameter'
Fix ERR_CONNECTION_RESET Caused by Chrome Extensions
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
Fix Windows Update Error 0x80070002 Due to Network Issues
Fix Git Remote Origin Already Exists Error macOS
How to Resolve Windows Update Error 0x800f081f
How to Resolve Windows Update Error 0x800f081f
Windows 11 Blue Screen After Update Fix with SFC
How to Resolve Git Clone Timeout on GitHub Enterprise