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Conflict between two referenced assemblies

I play with a .Net Core application that works fine. However, today I found that output contains a warning. After setting the detailed log level, I found the following:

 2> Dependency "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60". 2> Could not resolve this reference. Could not locate the assembly "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. 2> For SearchPath "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5". 2> Considered "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.Extensions.DependencyModel.winmd", but it didn't exist. 2> Considered "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.Extensions.DependencyModel.dll", but it didn't exist. 2> Considered "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.Extensions.DependencyModel.exe", but it didn't exist. 2> For SearchPath "{CandidateAssemblyFiles}". 2> Considered "C:\Users\Alex\.nuget\packages\xunit.runner.visualstudio\2.2.0-beta4-build1194\build\netcoreapp1.0\xunit.runner.visualstudio.dotnetcore.testadapter.dll", 2> but its name "xunit.runner.visualstudio.dotnetcore.testadapter" 2> didn't match the expected name "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60". 2> Considered "C:\Users\Alex\.nuget\packages\xunit.runner.visualstudio\2.2.0-beta4-build1194\build\netcoreapp1.0\xunit.runner.utility.dotnet.dll", 2> but its name "xunit.runner.utility.dotnet" 2> didn't match the expected name "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60". 2> Required by "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\testhost.dll". 2> Required by "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.TestPlatform.CrossPlatEngine.dll". 2> There was a conflict between "Microsoft.Extensions.DependencyModel, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60" and "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60". 2> "Microsoft.Extensions.DependencyModel, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60" was chosen because it was primary and "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60" was not. 2> References which depend on "Microsoft.Extensions.DependencyModel, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60" [C:\Users\Alex\.nuget\packages\microsoft.extensions.dependencymodel\1.0.0\lib\netstandard1.6\Microsoft.Extensions.DependencyModel.dll]. 2> C:\Users\Alex\.nuget\packages\microsoft.extensions.dependencymodel\1.0.0\lib\netstandard1.6\Microsoft.Extensions.DependencyModel.dll 2> Project file item includes which caused reference "C:\Users\Alex\.nuget\packages\microsoft.extensions.dependencymodel\1.0.0\lib\netstandard1.6\Microsoft.Extensions.DependencyModel.dll". 2> C:\Users\Alex\.nuget\packages\microsoft.extensions.dependencymodel\1.0.0\lib\netstandard1.6\Microsoft.Extensions.DependencyModel.dll 2> References which depend on "Microsoft.Extensions.DependencyModel, Version=1.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60" []. 2> C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.TestPlatform.CrossPlatEngine.dll 2> Project file item includes which caused reference "C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.TestPlatform.CrossPlatEngine.dll". 2> C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\testhost.dll 2> C:\Users\Alex\.nuget\packages\microsoft.testplatform.testhost\15.0.0-preview-20161123-03\lib\netstandard1.5\Microsoft.TestPlatform.CrossPlatEngine.dll 2> C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(1909,5): warning MSB3277: Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. 2> Done executing task "ResolveAssemblyReference".

Line There was a conflict between "Microsoft.Extensions.DependencyModel... I don’t know how to get around this warning because I just use the .Net standard 1.1 and System.Reflection.Emit package from NuGet and don’t reference anything else .

Of course, I can just ignore this warning, but is looking for some solution

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According to a detailed log, we found that the dependency "Microsoft.Extensions.DependencyModel, Version = 1.0.1.0" is required from your code, but this dependency with Version = 1.0.0.0 is already installed.

Therefore, when we compile the project, this dependency with Version = 1.0.0.0 will be selected, which will lead to a conflict. Thus, you can use NuGet to add the dependency "Microsoft.Extensions.DependencyModel" with version = 1.0.1.0 to solve this problem.

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Source: https://habr.com/ru/post/1263092/

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