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 Wildcard Subdomain Troubleshooting Checklist
When you set up a wildcard DNS record (e.g., *.example.com) in Cloudflare, subdomain...
Fix Windows Update Service Not Running for System Restore
You might see “System Restore did not complete successfully” or “Windows Update service is not ru...
Fix Nginx 502 Bad Gateway in Docker Alpine
You have an Nginx container running on Alpine Linux, and it returns a 502 Bad Gateway. This usual...
How to Fix Nginx 502 Bad Gateway in Docker Logs
If your Nginx container shows a 502 Bad Gateway error, it usually means Nginx cannot...
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...
Issue queue
SitemapFix Angular Breakpoints Not Hit in VS Code
Fix Docker Container Exiting Right Away in Foreground
JavaScript IntelliSense Not Working in VSCode
How to Fix Windows Update Error 0x80070002 in Windows 11
Chrome Not Secure Error Workaround for Internal Sites
Taskbar Icons Disappeared After Signing Out: Fix Guide
npm Build Failed: Syntax Error Troubleshooting
Windows 11 WiFi Connected No Internet IPv4 Fix
Docker Container Exits Right After Start with Volume Mount
How to Fix npm Permission Denied on node_modules
How to Remove an Existing Git Remote Origin
Resolve Git Permission Denied After Adding Remote
Fix Docker Container Exiting Right Away in Foreground
JavaScript IntelliSense Not Working in VSCode
How to Fix Windows Update Error 0x80070002 in Windows 11
Chrome Not Secure Error Workaround for Internal Sites
Taskbar Icons Disappeared After Signing Out: Fix Guide
npm Build Failed: Syntax Error Troubleshooting
Windows 11 WiFi Connected No Internet IPv4 Fix
Docker Container Exits Right After Start with Volume Mount
How to Fix npm Permission Denied on node_modules
How to Remove an Existing Git Remote Origin
Resolve Git Permission Denied After Adding Remote