Windows Defender – You’ll need a new app to open this “windowsdefender”
After a long time, I can say I have a solution to prevent THIS
You MUST open a Powershell Window with elevated permissions and enter this
Add-AppxPackage -DisableDevelopmentMode -Path C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\AppxManifest.xml -Verbose -Register
After that, you are able to open Windows Defender normally.