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

Checklist for Fixing Windows Security Startup Failure

When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...

Fixing Node Version Mismatch When Running Create React App

When you run npx create-react-app my-app and see errors about an unsupported Node.js...

Fix Task Scheduler File Locked Permission Denied

You set up a task in Windows Task Scheduler, but it fails with an error like 'file locked' or 'pe...

Prevent Windows Update Dependency Conflicts on Reboot

You restart your Windows PC after updates, only to see a message about a dependency conflict or a...

Fix VirtualBox Kernel Driver Not Installed on Windows 10

How to Fix Windows Security Error 0x80073b01

You may see error 0x80073b01 when opening Windows Security or trying to use its features. It usua...