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

Fix SSH Permission Denied (publickey) Error

You try to SSH into a server and get Permission denied (publickey). This typically m...

Fix Firefox Not Responding on Mac M1: Practical Steps

If Firefox stops responding on your Mac with an M1 chip, you're not alone. The issue often shows ...

Fix Windows Security Authentication Error 0x80070035

Fix Microsoft Store 404 Not Found After Update

After a Windows update, you might open Microsoft Store and see a 404 Not Found error when trying ...

MongoDB Authentication Failed: Causes and Fixes

You try to connect to MongoDB and get "Authentication failed" or similar error. This usually happ...

How to Fix Windows Update High CPU Usage

You're working, and suddenly your fan spins up, the system feels sluggish, and Task Manager shows...