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

Fix Jupyter Notebook Token Not Working on Localhost

If you see a token prompt when opening Jupyter Notebook on localhost, and entering the token fail...

Fix PowerShell Blank Screen with No Cursor

If you open PowerShell and see only a blank window with no cursor (no blinking line), the console...

Fix Microsoft Store File Locked Error on Windows 11

You try to install or update an app from the Microsoft Store on Windows 11, but you get an error ...

Fix 'Port Already in Use' Error with Windows Defender Firewall

You try to start a local service or application, and it fails with an error like 'port already in...

Fix OneDrive 502 Bad Gateway Error on Windows 10

Users on Windows 10 may encounter a 502 Bad Gateway error when trying to sync fi...

Fix PowerShell Authentication Failed Credentials Error