Windows security app does not launch in Windows 11.

[Kaushik_G]

Even after two months after Windows 11 being officially released this problem still persists, the windows security app won't launch and a dialog box appears where it asks to look for an application in the Microsoft store.

I receive notifications to turn on virus and threat protection but the app just won't launch.

This is completely annoying that Microsoft couldn't manage the compliance of its own security program within its operating system.  

[#2]

Hello,

See if this fix helps you:

https://www.kapilarya.com/fix-windows-defender-wont-open-in-windows-11

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

[#3]

Windows 11 22H2 is not officially or generally released yet