If You'll need a new app to open this windowsdefender link message appears every time you open Windows Defender, see this post.

If you're new to the Windows Security app, here's everything you need to know.

If Windows Security is not opening or working in Windows 11, then you can follow this guide to fix the problem. Use an admin account to do so.

Your Microsoft computer comes with built-in safety software that shields you from the worst threats. Here's how to navigate your toolkit.