Checklists for software errors, setup, and tool workflows.

Fix Jupyter Kernel Not Starting on Windows 10

When you launch a Jupyter notebook and the kernel never starts—or shows a 'Kernel error' or 'Conn...

Postgres Password Authentication Failed: A Practical Checklist

You're connecting to PostgreSQL and get 'password authentication failed for user'. This is a comm...

Fix Windows Terminal Path Not Found Registry Error

If you see an error like "Windows Terminal: The path '...' is not found in the registry"...

Fix 'Microsoft Store command not found' in PowerShell

When you run microsoft-store in PowerShell and get a "command not found" error, it u...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

How to Resolve Port Conflicts in Windows Terminal

You start a service or application in Windows Terminal and see an error like "port already in use...