How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...
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 in Chrome: Proxy Settings Guide
If you see ERR_NAME_NOT_RESOLVED in Chrome, it usually means the browser can'...
Fix Git Authentication Failed in VS Code on Mac
If you see "Git authentication failed" when pushing or pulling in VS Code on a Mac, the p...
Fix Windows Security App Blocked by Antivirus
You open Windows Security (formerly Windows Defender) only to see an error or blank screen becaus...
Python Memory Error When Processing Large Files: Troubleshooting Checklist
You're running a Python script that reads a large file—maybe a CSV with millions of rows, a l...
Fix Windows Explorer Restarting from Corrupted System Files
If Windows Explorer keeps restarting unexpectedly, corrupted system files are a common cause. Thi...
Issue queue
SitemapResolve Git Authentication Failed in VS Code macOS
Fix 'Python Is Not Recognized as an Internal or External Command'
How to Set Node Version for a Project
How to Avoid Hanging Requests in Python
Fix No Internet After Sleep on Windows 11
How to Restore Node.js IntelliSense in VSCode
Resolve Git Push Rejected Due to Large File
Fix VS Code Save Permission Errors
How to Fix Git SSL Certificate Problem: Unable to Get Local Issuer
How to Resolve Git Clone Connection Timed Out
Cloudflare Wildcard Subdomain Cache Not Working: Fixes
Windows Cannot Access Shared Folder: Network Path Not Found Fix
Fix 'Python Is Not Recognized as an Internal or External Command'
How to Set Node Version for a Project
How to Avoid Hanging Requests in Python
Fix No Internet After Sleep on Windows 11
How to Restore Node.js IntelliSense in VSCode
Resolve Git Push Rejected Due to Large File
Fix VS Code Save Permission Errors
How to Fix Git SSL Certificate Problem: Unable to Get Local Issuer
How to Resolve Git Clone Connection Timed Out
Cloudflare Wildcard Subdomain Cache Not Working: Fixes
Windows Cannot Access Shared Folder: Network Path Not Found Fix