http://developers.de/blogs/damir_dobric/archive/2016/02/04/crazy-compile-time-reference-for-mscorlib-in-uwp-project-s.aspxScience we started with .NET Core and UAP (Universal Application Platform) we complained very often about unexpected errors, which we simply couldn’t understand. One of my favorites is this one: Microsoft.NETCore.Portable.Compatibility 1.0.0 providesenCommunityServer 2008 SP1 (Build: 30619.63)