Error Resolving Blazor Runtime Dependencies

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[regression] [worked-in:16.3]
See attached

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Original Comments

Visual Studio Feedback System on 12/9/2019, 01:56 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

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Original Solutions

(no solutions)

[mkArtakMSFT]

Here is the exception thrown: Severity Code Description Project File Line Suppression State
Error MSB4018 The "ResolveBlazorRuntimeDependencies" task failed unexpectedly.
System.InvalidOperationException: Multiple assemblies found with the same assembly name 'Microsoft.CodeAnalysis.resources':
Microsoft.CodeAnalysis.resources
C:\Users*.nuget\packages\microsoft.codeanalysis.common\3.4.0\lib\netstandard2.0\de\Microsoft.CodeAnalysis.resources.dll
at Microsoft.AspNetCore.Blazor.Build.ResolveBlazorRuntimeDependencies.g__CreateAssemblyLookup|17_1(IEnumerable1 assemblyPaths) at Microsoft.AspNetCore.Blazor.Build.ResolveBlazorRuntimeDependencies.ResolveRuntimeDependenciesCore(String entryPoint, IEnumerable1 applicationDependencies, IEnumerable`1 monoBclAssemblies)
at Microsoft.AspNetCore.Blazor.Build.ResolveBlazorRuntimeDependencies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() SantosBlog.Client C:\Users*.nuget\packages\microsoft.aspnetcore.blazor.build\3.1.0-preview4.19579.2\targets\Blazor.MonoRuntime.targets 252

[mkArtakMSFT]

Thank you for filing this issue. In order for us to investigate this issue, please provide a minimalistic repro project (ideally a GitHub repo) that illustrates the problem.

[pranavkm]

See #17644 (comment) for a workaround. We'll use the other issue to track fixing this.