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

Fix MongoDB Authentication Failed: Database Mismatch

When you see Authentication failed in MongoDB along with a message about database mi...

Fix Visual Studio Installer Stuck on Preparing Files

You start a Visual Studio installation or update, and the installer sits on "Preparing files" for...

Fix FileZilla FTP Connection Timed Out Error

If you see "Connection timed out" in FileZilla, the FTP client cannot establish a data connection...

Fix Windows Store Error 0x80073cf9 – Step-by-Step Guide

When you try to download or update an app from the Microsoft Store, you might see error 0x80073cf...

Fix Pip Permission Denied After Python Upgrade

Jupyter Kernel Dead: Common Causes and Fixes

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