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

How to Set Up Windows Security Migration Tool Step by Step

When you upgrade or replace a Windows device, you may need to migrate security settings such as f...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

Fix MongoDB Authentication Failed: Database Mismatch

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

Fix Jupyter Notebook Token Not Working in VS Code

You enter your Jupyter notebook token in VS Code, but it fails to connect. The server log shows a...

Fix Microsoft Store Blank Screen Loading Issue

When you open Microsoft Store and only see a blank white or gray screen, the app isn't loading co...

Fix Windows Defender Authentication Failed After Update

After a recent Windows update, you might see an error like "Authentication failed" when trying to...