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 notesHow to Fix Git Push Failed Due to Large File
You try to push a commit to a remote repository, and Git rejects it with an error about file size...
Fix ERR_CONNECTION_RESET by Clearing Browser Cache
When you see the ERR_CONNECTION_RESET error in Chrome, it usually means the conn...
Fix Windows 11 Update Stuck at 0% – BITS Service Issues
You click 'Check for updates' in Windows 11, and it sits at 0% for minutes or hours. Ofte...
Chrome Extensions Not Loading from Web Store: Fix Guide
You click “Add to Chrome” on the Web Store, but nothing happens, or the extension never appears. ...
Fix 'Permission Denied' When Installing Python Packages Without sudo
If you see "Permission denied" when running pip install, you're not alon...
Issue queue
SitemapFix Wi-Fi Connected but No Internet on Windows 11 (No Router Restart)
Second Monitor Taskbar Icons Not Showing? Try These Steps
How to Fix Error 0x80070005 in Windows Update
How to Reset Taskbar Icons in Windows 11: 4 Methods
How to Fix Firefox Secure Connection Failed on Mac
VS Code Permission Denied Error: Causes and Solutions
Fix Port Already in Use Error in Docker Compose
Docker Desktop Engine Stuck After Update
node-sass Build Failed on Linux: Common Fixes
Fix Greyed Out Real-Time Protection in Windows Defender
Resolve Error 0x800f081f in Windows Update
How to Fix Cloudflare 522 Errors: Connection Timeout Guide
Second Monitor Taskbar Icons Not Showing? Try These Steps
How to Fix Error 0x80070005 in Windows Update
How to Reset Taskbar Icons in Windows 11: 4 Methods
How to Fix Firefox Secure Connection Failed on Mac
VS Code Permission Denied Error: Causes and Solutions
Fix Port Already in Use Error in Docker Compose
Docker Desktop Engine Stuck After Update
node-sass Build Failed on Linux: Common Fixes
Fix Greyed Out Real-Time Protection in Windows Defender
Resolve Error 0x800f081f in Windows Update
How to Fix Cloudflare 522 Errors: Connection Timeout Guide