In Visual Studio I have changed each Deployment Target from 6.0 to 12.2 and not one of those makes available any simulators. When I launch a test project directly from within Xcode, it offers iPhone 8, 8+, 11, 11 Pro and others as available simulators and those indeed work. When I look at the list to choose a simulator I see the message line: 'Lower the 'Deployment Target' to see older simulators or check your Apple SDK path' Now Visual Studio shows the only available simulator as being the Generic Simulator with a hammer, which doesn't launch anything that I can tell. I'm currently running the following versions: I can plug my iPhone in however and deploy my project onto it just fine, but I'm used to working with Preview in VS and also running a simulator for quicker response. Immediately afterward I lost any listing of available iOS simulators for my Xamarin project in Visual Studio. Yesterday I updated my Visual Studio and Xcode.