title: How to add Newtonsoft 9.0.1 in a .NET 4.6.1 project?
body: <p>I'm unable to install <code>Newtonsoft 9.0.1</code> package in a 4.6.1 project via <code>nuget</code>. In .NET Core projects it seems to be OK.</p>
  
  <p>Error message:</p>
  
  <p><a href="https://i.stack.imgur.com/BfFbe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BfFbe.png" alt="enter image description here"></a></p>
  
  <pre>
  
      PM> Install-Package Newtonsoft.Json -verbose
  
      GET https://www.nuget.org/api/v2/FindPackagesById()?id='Newtonsoft.Json'
      OK https://www.nuget.org/api/v2/FindPackagesById()?id='Newtonsoft.Json' 179ms
  
      Attempting to gather dependency information for package 'Newtonsoft.Json.9.0.1' with respect to project 'ClassLibrary1', targeting '.NETFramework,Version=v4.6.1'
      Package Newtonsoft.Json from source nuget.org gathered from cache.
      Total number of results gathered : 2
      Gathering dependency information took 1,32 ms
      Summary of time taken to gather dependencies per source :
      Attempting to resolve dependencies for package 'Newtonsoft.Json.9.0.1' with DependencyBehavior 'Lowest'
      Resolving dependency information took 0 ms
      Resolving actions to install package 'Newtonsoft.Json.9.0.1'
      Resolved actions to install package 'Newtonsoft.Json.9.0.1'
      Retrieving package 'Newtonsoft.Json 9.0.1' from 'nuget.org'.
      For adding package 'Newtonsoft.Json.9.0.1' to project 'ClassLibrary1' that targets 'net461'.
      For adding package 'Newtonsoft.Json.9.0.1' to project 'ClassLibrary1' that targets 'net461'.
      Adding package 'Newtonsoft.Json.9.0.1' to folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages'
      Added package 'Newtonsoft.Json.9.0.1' to folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages'
      Install failed. Rolling back...
      Package 'Newtonsoft.Json.9.0.1' does not exist in project 'ClassLibrary1'
      Removing package 'Newtonsoft.Json.9.0.1' from folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages'
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\portable-net40+sl5+wp80+win8+wpa81'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\portable-net45+wp80+win8+wpa81'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\netstandard1.0'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\net20'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\net35'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\net40'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib\net45'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\tools'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1\lib'.
      Removed file 'Newtonsoft.Json.9.0.1.nupkg' from folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1'.
      Removed folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages\Newtonsoft.Json.9.0.1'.
      Removed package 'Newtonsoft.Json.9.0.1' from folder 'C:\Users\robson.silva\documents\visual studio 2015\Projects\ClassLibrary1\packages'
      Executing nuget actions took 548,1 ms
      Install-Package : Failed to add reference to 'Newtonsoft.Json'.
      At line:1 char:1
      + Install-Package Newtonsoft.Json -verbose
      + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
          + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand
  
      Time Elapsed: 00:00:01.6617616
  
  </pre>
  
  <p>Is it a bug in the <code>Newtonsoft</code> version?</p>