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

Jupyter Kernel Dead: Common Causes and Fixes

You're working in a Jupyter notebook, and suddenly the kernel dies. The notebook becomes unrespon...

Optimize Microsoft Store for Better Performance

If the Microsoft Store feels sluggish, takes long to load, or downloads are slow, it's often due ...

Fix OneDrive Sync Not Working After Windows Update

After a Windows update, OneDrive may stop syncing files or show errors like "OneDrive is syncing"...

Cloudflare 521 Error After Update: Fixes That Work

If you see a 521 error after updating your web server, Cloudflare can't connect ...

How to Fix Windows Update 502 Bad Gateway Error

You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...

Fix Windows Activation Command Error 0x80070002