VS 15.8.2 broke build tools - missing RuntimeIdentifier
See the question and my original answer on StackOverflowI had a similar problem. My error was
error : Your project file doesn't list 'win10' as a "RuntimeIdentifier". You should add 'win10' to the "RuntimeIdentifiers" property in your project file and then re-run NuGet restore.
Well, it turned out I just had to change by build target from "Any CPU" to something else (x64 for example)...