Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix ERR_NAME_NOT_RESOLVED with ipconfig /flushdns in Chrome
When Chrome shows ERR_NAME_NOT_RESOLVED, it means the browser couldn't trans...
Windows Search Indexing Configuration Best Practices
If Windows Search is slow, returns no results, or uses too much CPU, the indexing configuration i...
Cloudflare DNS Propagation Time: What to Expect and How to Check
After changing DNS records on Cloudflare, you might wonder how long it takes for the changes to t...
How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...
Fix Docker 'No Space Left on Device' Volume Error
When Docker reports 'no space left on device' for a volume, the symptom is often a contai...
Issue queue
SitemapPython Virtual Environment Not Activating in Git Bash: Fixes
How to Troubleshoot Cloudflare Origin Certificates
Resolving 'Unable to Create index.lock' in Git
Chrome Extensions Not Loading? Try Disabling Antivirus Temporarily
Resolving npm Build Module Not Found Errors
Nginx Permission Denied Troubleshooting Guide
npm ENOENT package.json Not Found Fix
Git Merge Conflict Resolution Guide
Cloudflare Origin SSL Setup for cPanel Hosting
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
How to Reset Network Settings in Windows 11 Offline
VSCode Terminal Blank or Not Responding on Ubuntu
How to Troubleshoot Cloudflare Origin Certificates
Resolving 'Unable to Create index.lock' in Git
Chrome Extensions Not Loading? Try Disabling Antivirus Temporarily
Resolving npm Build Module Not Found Errors
Nginx Permission Denied Troubleshooting Guide
npm ENOENT package.json Not Found Fix
Git Merge Conflict Resolution Guide
Cloudflare Origin SSL Setup for cPanel Hosting
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
How to Reset Network Settings in Windows 11 Offline
VSCode Terminal Blank or Not Responding on Ubuntu