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

Avoid Windows Activation Version Mismatch on Reinstall

You reinstall Windows, enter your product key, and get an error: “This product key does not match...

How to Fix Windows Terminal Not Responding

Windows Terminal can stop responding for a few reasons. You might see a frozen window, a blank sc...

Fix Windows Security Blank Screen Not Loading

You open Windows Security (formerly Windows Defender) and see nothing but a blank white or gray s...

How to Fix Windows Security Not Working on Ubuntu

You're running Ubuntu and see an error that Windows Security isn't working. This usually happens ...

Fix Windows Defender Not Starting Due to Antivirus Conflict

You open Windows Security and see a message that Defender is turned off or not starting. The most...

Fix Command Prompt DNS Lookup Failed Error 0x80072ee7