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Asked: 2026-06-08T06:56:14+00:00

I am just starting a metro app. The main application is a c++ metro

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I am just starting a metro app. The main application is a c++ metro app. The application builds and runs fine.

I have a c# library added to the solution and it builds everything builds fine.

I reference the C# library from the C++ application and it will not build with the following errors:

error WMC1006: Cannot resolve Assembly or Windows Metadata file ‘System.Runtime.dll’

error EMC9999: Type universe cannot resolve assembly: System.Runtim, Version…………………

Any ideas what’s going on? I have not added any references to my c# class library. It’s a vanilla metro library.

Thanks!
Eric

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1 Answer

  1. Editorial Team

    Unfortunately, as Kris Vandermotten points out, C++/CX cannot consume C# class libraries (only WinMD files), and there are many restrictions on WinMD files that do not exist for managed class libraries.

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