Checklists for software errors, setup, and tool workflows.

Fix Windows Security Not Opening or Running Slow

If Windows Security (formerly Windows Defender) won't open or takes forever to load, it's usually...

How to Fix Chrome Access Denied Error Code

When you see 'Access Denied' or 'Error code: Access Denied' in Chrome, the page you're trying to ...

Fix Windows Security Blank Screen in Command Prompt

You open Windows Security from Command Prompt and see nothing but a blank window. This can happen...

Fix Windows Defender Update Error 0x80240034

If you see error 0x80240034 when updating Windows Defender, it usually means the update download ...

How to Fix Windows Update Service Unavailable Error

If you see 'Windows Update service unavailable' when trying to check for updates, the Windows Upd...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...