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

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...

How to Fix Rate Limit Errors in Windows Security App

You open Windows Security to run a scan or check protection status, and get a rate limit error. T...

How to Fix Windows Terminal JSON Schema Validation Error

If you see a JSON schema validation error when opening Windows Terminal or editing its settings f...

Syncing Chrome Bookmarks on Ubuntu: Setup and Fixes

If you use Chrome on Ubuntu and your bookmarks aren't syncing across devices, you're not alone. S...

Fixing GitHub Actions Permission Denied for Git Commands

Fix Windows Activation Failed Due to Product Key Mismatch

You see "Windows activation failed due to product key mismatch" after entering a key or during an...