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 Microsoft Teams Screen Sharing Not Working

When you try to share your screen in Microsoft Teams and nothing happens—or participants see a bl...

Fix OneDrive Error 0x8004de40 Rate Limit Issues

OneDrive error 0x8004de40 typically appears when you hit a temporary rate limit. This often happe...

Fix Windows Activation Key Not Found Command Line Error

When you run slmgr /ipk or a similar command to activate Windows, you might see an e...

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

Cloudflare Tunnel Sync Issues: How to Diagnose and Fix

If your Cloudflare tunnel stops syncing or shows stale routes, you're not alone. This guide cover...