Type universe cannot resolve assembly: System.Runtime

Question

To All,

I've a wpf project that compile correctly no errors in vs13, but when I open in vs2015 the xaml designer compliants

Type universe cannot resolve assembly: System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a.

The project compiles and run correctly, but the designer barf at the xaml files.

Probably a missing link?

Thanks

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phil Chin

Answer 1

Hi phil chin,

Based on your description, this issue was more related to the version of target framework. You could
Right click -> properties -> change the target framework, try it.

You could refer to this similar thread abount “Type universe cannot resolve assembly: Microsoft.VisualStudio.Data” for details: https://social.msdn.microsoft.com/Forums/en-US/895d5a36-b0d4-4588-9c87-6fccb21a6793/type-universe-cannot-resolve-assembly-microsoftvisualstudiodata?forum=vswpfdesigner

In addition, you could also create a new project and see its designer whether work well.

Best Regards,

Xavier Eoro

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Answer 2

I've got this same error whenever I created a new Universal Window Blank App in Visual Studio Community 2015, Update 3:

Type universe cannot resolve assembly: System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a

Installing Microsoft.NETCore.UniversalWindowsPlatform from the Packet Manager Console (Tools/NuGet Package Manager) resolved the problem.

 PM> Install-Package Microsoft.NETCore.UniversalWindowsPlatform

Answer 3

I get the same errors when exporting from unity 5.41.  When I try to load it into visual studio is gives the exact same errror

Answer 4

I just got the same error using VS 2015, Win10 Anniversary version, with Xamarin.Forms sample project WorkingWithListViews after updating packages.  Fixed by using NuGet Package Manager as advised by Peter Gloor but this time to remove the Microsoft.NETCore.UniversalWindowsPlatform package from the UWP project, then re-installing it.  Now work fine.

Answer 5

PM> Install-Package Microsoft.NETCore.UniversalWindowsPlatform worked for me as well. Thanks! Ron

Answer 6

Re-installing works perfect.

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Fernando Angelieri

Answer 7

Thanks, this solution helped me as well.

Answer 8

I've got this same error whenever I created a new Universal Window Blank App in Visual Studio Community 2015, Update 3:

Type universe cannot resolve assembly: System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a

Installing Microsoft.NETCore.UniversalWindowsPlatform from the Packet Manager Console (Tools/NuGet Package Manager) resolved the problem.

 PM> Install-Package Microsoft.NETCore.UniversalWindowsPlatform

This error popped up for me and this solution worked for me in Visual Studio 2017 (15.4). Installed the latest version of Microsoft.NETCore.UniversalWindowsPlatform (6.0.0). In addition, I checked to make sure Nuget package manager was set to automatically checking for missing packages. After Rebuild the error disappeared and I could Deploy the app again.

Answer 9

In my case, I had a local NuGet package source whose path no longer existed. Removed the package source and rebuilt solution.