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

Nginx 502 Bad Gateway: Troubleshooting Checklist

If you're seeing a 502 Bad Gateway from nginx, it usually means nginx can't reach the upstream se...

Windows Terminal Invalid Configuration: Restore Default Settings

If Windows Terminal fails to start or shows an error about invalid configuration, the problem is ...

Windows Defender Authentication Failed: Step-by-Step Checklist

You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...

Docker Container Restarting Due to Health Check: Causes and Fixes

Task Scheduler Path Not Found: Complete Checklist

When a scheduled task fails with 'path not found', the task may not run at all, or it runs with e...

Jupyter Notebook Token Not Working? How to Reset Password

You start Jupyter Notebook, see the token prompt, paste the token from the terminal, but it fails...