We are experiencing the same issue. We can confirm that the issue occurs when deploying a Xamarin.iOS AppStore app via MDM to an arm64e device running iOS 14.2. Tested devices that are affected: iPad Pro 11" 2nd gen iPad Pro 12.9" 3rd gen iPad 8th gen Tested devices that are not affected: iPad 5th gen

It looks like this is the same issue reported here: https://developer.apple.com/forums/thread/666399

I think these are the commonalities: OS: iOS 14.2, iOS 14.3 Beta 1, iOS 14.3 Beta 2 Apps: Any Xamarin.iOS app (even apps that don't use any external dll/nuget libraries crash) Hardware: Any arm64e cpu device (ex: iPad Pro 11" 1st/2nd gen, iPad Pro 12.9" 3rd/4th gen, iPad 8th gen, iPad Air 3rd/4th gen, iPhone 11, etc) Deployment: Deployed via any MDM or the Apple Configurator 2 from an App Store source (Ad-hoc .ipa deployment works fine even via MDM or Apple Configurator 2, direct Apple Store app install works fine)