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

Fix Windows Security Authentication Failed in Remote Desktop

When you try to connect to a remote PC and see "Windows Security" followed by "Authentication fai...

How to Fix Windows Update Invalid Configuration Error

When Windows Update stops working with an 'invalid configuration' error, it usually means a syste...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Proxy Error

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a proxy connect...

Fix Windows Terminal Not Starting After Settings Reset

If you reset Windows Terminal settings and now the app won't start, you're likely stuck with a bl...

Resolving npm Dependency Conflicts After an Update

Jupyter Kernel Stuck on Connecting: Practical Fixes

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