I have loaded core project to the VS 2017 RC Community and open *.csproj in text editor.
Just delete teg
<RuntimeFrameworkVersion>
and replace
<TargetFramework>netcoreapp1.1</TargetFramework>
to
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
And after all in project properties set to any another framework and reset back (VS reload and repair *.csproj file).
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…