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

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...

How to Fix Jupyter Notebook Token Authentication Error

When you start Jupyter Notebook, you might see a prompt asking for a token or password, or the br...

Fix Windows Update File Locked Registry Error

When Windows Update fails with an error like 0x80070020 or a message that a file is ...

Windows Terminal Setup Checklist for Developers

You've installed Windows Terminal, but the default setup isn't quite right for development. This ...

Fix Command Prompt Sync Issue with System Clock