Fix Nginx Upstream Connection Refused Socket Error
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 Python venv Not Activating in VS Code Terminal
When you create a Python virtual environment but it doesn't activate in the VS Code terminal,...
Recover Lost Commits After Git Detached HEAD
You've made commits while in a detached HEAD state, and now you can't see them on any bra...
Fix Git Large File Push Permission Denied
When you run git push and get a permission denied error after adding a large file, t...
Windows 11 Update Blue Screen Error Code: How to Fix
If you see a blue screen with an error code after applying a Windows 11 update, you're not al...
How to Fix 'Permission Denied' When Saving Files in VS Code
You're editing a file in VS Code, hit save, and get a 'permission denied' error. This...
Issue queue
SitemapFix 'No Space Left on Device' in Docker Containers
Troubleshooting npm ERR! ENOENT package.json After Clone
Docker Port Conflict: How to Resolve
Internet Connected but No Browsing: DNS Fix
Fix DNS Probe Finished NXDOMAIN Error on Mac
Troubleshoot Nginx Permission Denied
How to Trust Self-Signed Certificates on Localhost
Windows 11 Update Stuck at 0% in Safe Mode Fix
Persist Docker Networks Across Reboots
Fix Chrome Hardware Acceleration Black Screen on External Monitor
Why Your VS Code Breakpoint Condition Isn't Working
How to Get PowerShell Back in VS Code Terminal
Troubleshooting npm ERR! ENOENT package.json After Clone
Docker Port Conflict: How to Resolve
Internet Connected but No Browsing: DNS Fix
Fix DNS Probe Finished NXDOMAIN Error on Mac
Troubleshoot Nginx Permission Denied
How to Trust Self-Signed Certificates on Localhost
Windows 11 Update Stuck at 0% in Safe Mode Fix
Persist Docker Networks Across Reboots
Fix Chrome Hardware Acceleration Black Screen on External Monitor
Why Your VS Code Breakpoint Condition Isn't Working
How to Get PowerShell Back in VS Code Terminal