4.6.1-2 in VS2017 users may experience the unwanted replacement of their version of System.Net.Http by the one VS2017 or Msbuild 15 wants to use.
We deleted this version here:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\System.Net.Http.dll
and here:
C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\System.Net.Http.dll
Then the project builds with the version we have referenced via NuGet.