I am trying to install Xamarin on my Windows 7 - 64bit OS but from the "Requirement" box, it shows "Xamarin" is missing "Several items missing or outdated", when I click the detail, it shows below
Xamarin.Android SDK is missing or out of date
Xamarin.iOS SDK is missing or out of date
Visual Studio 2015 extension Xamarin is missing or out of date
Would you let me know where and how to install above missing components?