.NET Core 2.0 self-contained app: Could not load file or assembly 'System.Private.ServiceModel, Version=4.1.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

Hi,

I’m migrating a console application to .NET Core 2.0 and when I run the app on my server I’m receiving this message:

System.IO.FileNotFoundException: Could not load file or assembly 'System.Private.ServiceModel, Version=4.1.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
File name: 'System.Private.ServiceModel, Version=4.1.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

This app is self-contained and has a netstandard2 library dependency that uses the System.ServiceModel.Http package to call an external api (using WCF).

When I publish the app using the win-x64 runtime identifier the file System.Private.ServiceModel.dll is not placed in the output folder.

If I use the win81-x64/win10-x64 runtime identifiers the file is placed in the output folder.

Is this the correct behavior?

Thanks!

Fabiano

How to simulate

1. Create the project: dotnet new console

2. Update the csproj to:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="System.ServiceModel.Http" Version="4.4.0" />
  </ItemGroup>

</Project>

1. Update the Program.cs to:

using System;
using System.ServiceModel;

namespace Sample
{
    class Program
    {
        static void Main(string[] args)
        {
            var binding = new BasicHttpBinding(BasicHttpSecurityMode.Transport)
            {
                MaxReceivedMessageSize = 5242880
            };


            Console.WriteLine("Hello World!");
        }
    }
}

1. Publish the project: dotnet publish --configuration Release --runtime win-x64

2. Execute the exe file on the publish folder

dotnet --info output

.NET Command Line Tools (2.0.2)

Product Information:
 Version:            2.0.2
 Commit SHA-1 hash:  a04b4bf512

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.15063
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.0.2\

Microsoft .NET Core Shared Framework Host

  Version  : 2.0.0
  Build    : e8b8861ac7faf042c87a5c2f9f2d04c98b69f28d

[StephenBonikowsky]

4.5.0 packages all have “win” RIDs now as well as “win7” RIDs for netstandard2.0 and netstandard1.3 respectively.

[breddynet]

Workaround add this to your build process

 <Target Name="BuildProces" BeforeTargets="Build">
    <Copy SourceFiles="$(USERPROFILE)\.nuget\packages\system.private.servicemodel\4.5.3\runtimes\win\lib\netstandard2.0\System.Private.ServiceModel.dll" DestinationFolder="$(OutputPath)\bin" />
  </Target>