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I have an ASP.NET Core 2.0 Razor Pages project. I am using Visual Studio 2017.

I have added one of our in-house assemblies to the project (it contains common definitions, types and functions etc). The project compiles but when I attempt to run it I get the following error.

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Here is my .csproj file

<Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp2.0</TargetFramework> <Version>2018.3.12.6</Version> </PropertyGroup> <ItemGroup> <PackageReference Include="JWT" Version="3.1.1" /> <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" /> <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0" PrivateAssets="All" /> <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.0" PrivateAssets="All" /> </ItemGroup> <ItemGroup> <DotNetCliToolReference Include="Microsoft.Extensions.SecretManager.Tools" Version="2.0.0" /> <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" /> <DotNetCliToolReference Include="dotnet-setversion" Version="*" /> </ItemGroup> <ItemGroup> <Reference Include="Common"> <HintPath>..\packages\Common.dll</HintPath> </Reference> </ItemGroup> </Project>

Here's my Visual Studio 2017 project showing the assembly in the project.

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Googling the error doesn't provide much useful information.

How do I add a reference to a custom assembly in an ASP.NET Core 2.0 Razor Pages project?

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  • Did you tried stackoverflow.com/questions/46279561/… ? Commented Mar 19, 2018 at 14:45
  • Yes I saw that post. The accepted answer is MVC related. I'm not using MVC. My project is a Razor Pages project. Commented Mar 19, 2018 at 14:53

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I fixed the same issue by installing Microsoft.Extensions.DependencyModel, version 2.0.3.

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The solution to the problem has been posted here https://github.com/dotnet/core-setup/issues/2981

See the top comment (by tuespetre) and then the update just further down (also by tuespetre). This worked for me.

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