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 Chrome Black Screen Flickering from Hardware Acceleration
If Chrome shows a black screen or flickers when watching videos, scrolling, or opening menus, har...
Fix VS Code Terminal Not Opening Due to Settings
You click the terminal panel icon in VS Code, but nothing happens. The panel doesn't slide up...
Windows Security App Not Opening as Administrator: Fixes
When you try to open the Windows Security app and it fails to launch, often with no error message...
Fix Git Clone Connection Timed Out on AWS CodeCommit
If you're seeing git clone connection timed out when trying to clone a repositor...
Fix pnpm ERR_PNPM_NO_OFFLINE_META: Step-by-Step Guide
You run pnpm install and see ERR_PNPM_NO_OFFLINE_META. This usually hap...
Issue queue
SitemapWindows Explorer Crashing After Update – Fix
Resolve Windows 11 Update Hang at 0% by Freeing Disk Space
Fix Windows Defender Blocked by Another Antivirus
VS Code Save Permission Denied – Troubleshooting Guide
Bypass pip Externally Managed Environment Error
Fix 'python command not found' on Windows
Git Detached HEAD: What It Is and How to Fix It
Mac Firefox Secure Connection Failed Troubleshooting
npm package.json Not Found – Wrong Directory Fix
Resolve Windows Shared Folder Credential Problems
Fix Node Sass Build Failure: Environment Variable Errors
Fix Remote Desktop Certificate Errors in Windows
Resolve Windows 11 Update Hang at 0% by Freeing Disk Space
Fix Windows Defender Blocked by Another Antivirus
VS Code Save Permission Denied – Troubleshooting Guide
Bypass pip Externally Managed Environment Error
Fix 'python command not found' on Windows
Git Detached HEAD: What It Is and How to Fix It
Mac Firefox Secure Connection Failed Troubleshooting
npm package.json Not Found – Wrong Directory Fix
Resolve Windows Shared Folder Credential Problems
Fix Node Sass Build Failure: Environment Variable Errors
Fix Remote Desktop Certificate Errors in Windows