Knowledge base for software setup, errors, and daily tool work.

Docker Compose Env File Not Found: Troubleshooting Checklist

Fix Command Prompt 502 Bad Gateway Due to DNS Issues

If you're seeing a 502 Bad Gateway error while using Command Prompt to access a web service or AP...

Fix VirtualBox Kernel Driver Not Working After Update

After a system update, VirtualBox may fail with errors like "Kernel driver not installed" or "Vir...

Fix Microsoft Store Error 0x80131500: App Not Loading

If you see error code 0x80131500 when trying to open the Microsoft Store or download an app, the ...

BitLocker 502 Bad Gateway Sync Issue: Practical Fixes

If you're seeing a 502 Bad Gateway error when syncing BitLocker recovery keys or policies, the pr...

Fix Windows Defender Service Not Starting (Error 404)

If you see error 404 when trying to start Windows Defender, it usually means the service executab...