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

Fix Jupyter Notebook Token Not Working on Mac

You launch Jupyter Notebook on your Mac, see the token URL in the terminal, copy it into your bro...

How to Access a BitLocker-Locked External Drive That Won't Open

You plug in an external drive that you know is BitLocker-encrypted, but instead of the usual unlo...

Windows Defender Stuck Loading: Reinstall Steps

Windows Defender (now Microsoft Defender) sometimes hangs on a loading screen, especially after a...

Fix BitLocker 'Cannot Access Drive Permission Denied' Error

Understanding the Error

You see 'Cannot access drive. Permission denied' when trying to o...

Chrome Browser Proxy Error Fix Checklist

If Chrome shows "ERR_PROXY_CONNECTION_FAILED" or similar proxy errors, you usually can't browse t...

How to Fix PuTTY SSH Connection Refused Error

You open PuTTY, enter your server's IP and port, click Open, and get "Connection refused"...