Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Knowledge base for software setup, errors, and daily tool work.
Common intent:
Shortcut:
Latest knowledge entries
BrowseHow to Disable Shell Extensions to Stop Explorer Restarting
If File Explorer keeps restarting, crashing, or freezing on its own, a misbehaving shell extensio...
npm run build Failed: Troubleshooting Checklist
When npm run build fails, the error message can be cryptic. This checklist walks thr...
How to Reset Windows Search Index (Step by Step)
If Windows Search stops finding your files, returns old results, or uses high CPU, the search ind...
Fixing Python UnicodeDecodeError When Reading CSV Files
You're trying to read a CSV file in Python and you get UnicodeDecodeError: 'utf-8&#...
Git index.lock File Exists Even After Deleting: Fixes
You delete the .git/index.lock file, but Git still says it exists. This can happen d...
Chrome Group Policy Certificate Authority Error Fix
Update Node.js Version for Package Compatibility
Fix BSOD After Memory Diagnostic on Windows 11
Git Non Fast Forward Error: Causes and Fixes
Fix Chrome Certificate Error Invalid Authority on Mac
Fix 'Windows Cannot Access Shared Folder' Samba Error
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
Fix Blue Screen and Rollback on Windows 11 Update
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
How to Fix Bluetooth Device Pairing Issues in Windows 11
Update Node.js Version for Package Compatibility
Fix BSOD After Memory Diagnostic on Windows 11
Git Non Fast Forward Error: Causes and Fixes
Fix Chrome Certificate Error Invalid Authority on Mac
Fix 'Windows Cannot Access Shared Folder' Samba Error
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
Fix Blue Screen and Rollback on Windows 11 Update
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
How to Fix Bluetooth Device Pairing Issues in Windows 11