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

Jupyter Kernel Not Starting After Update: Fixes

After updating Jupyter or its dependencies, you might see the kernel die immediately or hang with...

How to Fix Connection Refused in Windows Terminal

You open Windows Terminal, try to connect to a remote server via SSH or launch a local service, a...

Cloudflare Tunnel Setup Guide for Beginners

If you're trying to expose a local web server to the internet without opening firewall ports or d...

Stop Command Prompt High CPU Usage When Idle

You open Task Manager and see Command Prompt (cmd.exe) using 20-40% CPU, even though no windows a...

Fix Windows Security Authentication Error 0x80070035

Fix Microsoft Store Blank Screen After Reinstalling App

If you've reinstalled an app from the Microsoft Store and now see a blank screen when opening the...