@matty תעבור על הקישורים האלו (יש שם גם דברים כפולים)
https://www.minitool.com/news/you-need-new-app-to-open-windowsdefender.html
https://answers.microsoft.com/en-us/windows/forum/all/youll-need-a-new-app-to-open-this-windowsdefender/f18e368b-0039-46f9-9bf7-cef275c9edc0
https://answers.microsoft.com/en-us/windows/forum/all/youll-need-a-new-app-to-open-this-windowsdefender/a48847c3-7882-4f16-bac4-4874d7f851d1
https://techcommunity.microsoft.com/t5/windows-insider-program/windows-11-security-center-not-working-after-update-from-windows/m-p/2619752