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 notesHow to Fix Git index.lock File Exists Error on Mac
If you're working with Git on a Mac and see the error fatal: Unable to create '/pat...
Fix npm ENOWENT Package.json Not Found on Mac
If you see 'ENOENT: no such file or directory, open /path/to/package.json' when running n...
Cloudflare DNS Propagation Not Working with New Domain: Fixes
You registered a new domain, set it up with Cloudflare, but after hours (or days) the site still ...
How to Fix Git Clone Connection Timed Out Error
When you run git clone and see a connection timed out error, it usually...
How to Access a Shared Folder on Network in Windows 10
If you're trying to open a shared folder from another computer on your network but get an err...
Issue queue
SitemapFix VS Code Breakpoint Not Hit in Docker Container
Troubleshooting Cloudflare SSL Full Strict Mode
Remote Desktop Connection Failed Due to Expired Password: How to Fix
Fix npm run build Failed After Git Pull
Fix DNS Probe Finished NXDOMAIN in Edge Browser
Fix Chrome Crash on Startup Due to Hardware Acceleration
Fixing Nginx Upstream Connection Refused on Port 443
Fix Access Denied Error 0x80070005 in Windows Update
pip Externally Managed Environment Fix Guide
Nginx 502 Bad Gateway in Docker PHP-FPM: How to Fix
Fix Git Clone Timeout Errors with HTTP Timeout
Nginx Static File Permission Error Troubleshooting
Troubleshooting Cloudflare SSL Full Strict Mode
Remote Desktop Connection Failed Due to Expired Password: How to Fix
Fix npm run build Failed After Git Pull
Fix DNS Probe Finished NXDOMAIN in Edge Browser
Fix Chrome Crash on Startup Due to Hardware Acceleration
Fixing Nginx Upstream Connection Refused on Port 443
Fix Access Denied Error 0x80070005 in Windows Update
pip Externally Managed Environment Fix Guide
Nginx 502 Bad Gateway in Docker PHP-FPM: How to Fix
Fix Git Clone Timeout Errors with HTTP Timeout
Nginx Static File Permission Error Troubleshooting