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

Fix Jupyter Kernel Not Starting on Windows 10

When you launch a Jupyter notebook and the kernel never starts—or shows a 'Kernel error' or 'Conn...

Windows Search 504 Gateway Timeout: Troubleshooting Checklist

When Windows Search returns a 504 gateway timeout, it usually means the search service or its bac...

Fix Command Prompt Rate Limit Error: Practical Steps

If you're seeing a "rate limit" error in Command Prompt, it usually means a command or script is ...

Microsoft Teams Camera Black Screen: Practical Fixes

You join a Teams meeting and your camera shows a black screen. Your video doesn't appear for othe...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Windows Defender Network Error in Configuration Tool

When you open the Windows Defender Configuration Tool and see a network error, it usually means t...