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

Fix Jupyter Notebook Token Not Working on Ubuntu

You launch Jupyter Notebook on Ubuntu, but when you open the URL in your browser, the token promp...

Fix Microsoft Store 504 Timeout: Step-by-Step Troubleshooting

If you see a 504 Gateway Timeout error when opening or downloading from the Micr...

Fix Windows Activation Error Invalid Configuration

You try to activate Windows and see an error saying “invalid configuration”. Thi...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Checklist for Debugging 502 Bad Gateway in Command Prompt

You're working on a web app or API, and you get a 502 Bad Gateway error. The browser just says '5...

Fix PowerShell Login Loop Error 0x80070002

If you're stuck in a login loop after signing into Windows, and PowerShell or other system compon...