Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix git index.lock File Exists Error on Windows
If you see fatal: Unable to create 'index.lock': File exists. when running G...
How to Remove the Externally Managed Environment Flag in pip
If you're seeing error: externally-managed-environment when using pip on a moder...
Fix Windows Security App Access Denied Error
When you open Windows Security (formerly Windows Defender Security Center) and see an 'Access...
How to Fix Git Merge Conflict Error Code 128
When you run git merge and get error: merge conflict followed by ...
Fix Windows Search Indexing Error 0x80040c41
If you see error 0x80040c41 when searching in Windows, the indexing service is likely stuck due t...
Issue queue
SitemapTroubleshooting Windows Security App Issues
Troubleshooting Chrome Status Access Violation
How to Fix Windows Update Service Not Running Due to Malwarebytes
Docker Compose Env Var Override Not Working: Common Fixes
Python venv Activation Error: No Such File or Directory Fix
How to Fix 522 Connection Timeout in Nginx
Python MemoryError When Loading Big JSON Files
Fix Windows Update Error 0x80070002 Easily
Fix VSCode Source Control Not Detecting Changes
How to Restore Missing Taskbar Icons on a Second Display
Fix Slow Windows Search Indexing
Windows 11 Update Stuck at 0%? Run System File Checker First
Troubleshooting Chrome Status Access Violation
How to Fix Windows Update Service Not Running Due to Malwarebytes
Docker Compose Env Var Override Not Working: Common Fixes
Python venv Activation Error: No Such File or Directory Fix
How to Fix 522 Connection Timeout in Nginx
Python MemoryError When Loading Big JSON Files
Fix Windows Update Error 0x80070002 Easily
Fix VSCode Source Control Not Detecting Changes
How to Restore Missing Taskbar Icons on a Second Display
Fix Slow Windows Search Indexing
Windows 11 Update Stuck at 0%? Run System File Checker First