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

Jupyter Kernel Stuck on Connecting: Practical Fixes

You launch a notebook, but the kernel indicator stays gray or shows “connecting” for minutes. Thi...

Fix npm install Peer Dependency Conflicts

When you run npm install and see warnings like UNMET PEER DEPENDENCY or...

Fix Windows Security Connection Refused Service Not Running

If you see 'Connection refused' or 'Service not running' when opening Windows Security, the under...

Fix Windows Security Authentication Error 0x80070035

Fix Windows Update 502 Bad Gateway Connection Issue

When Windows Update fails with a "502 Bad Gateway" error, it usually means the update server can'...

Fix Windows Update Error 0x800f0922 When Using Backup Software

If you see error 0x800f0922 when trying to update Windows, and you use backup software, the probl...