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Editorial Team
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Asked: 2026-05-25T15:16:20+00:00

Upon trying to build even the simplest Metro application in Visual Studio, I get

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Upon trying to build even the simplest Metro application in Visual Studio, I get a dozen or so errors regarding missing assembly references (error WMC1003). I just installed VS 11 from here: http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=27543

Any and all help is appreciated!
Below is the part of the output of the build which specifies the errors:

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.Foundation'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Controls'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Markup'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Media'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Media.Animation'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Media.Imaging'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Data'

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v1.0\Microsoft.Windows.UI.Xaml.Common.targets(95,9): XamlCompiler error WMC1003: Window Runtime Reference Assembly is missing: 'Windows.UI.Xaml.Documents'
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1 Answer

  1. Editorial Team

    You can only build Metro apps on Windows 8. Are you using this?

    If not download the Windows 8 Developer preview with VS 2011 installed.

    http://dev.windows.com/

    Edit: Note from download link

    In order to develop Metro style applications, the Visual Studio 11 Developer Preview must be installed on the Windows Developer Preview with developer tools English, 64-bit. Developing Metro style applications on other Preview versions of Windows 8 is not supported.

    Note2: http://social.msdn.microsoft.com/Forums/en/toolsforwinapps/thread/12057f17-2f6c-422e-836e-47bcb1656a5d

    Developing Windows Metro style Applications

    At BUILD the only platform for developing Windows Metro style applications is the Windows Developer Preview with developer tools English, 64-bit (x64) The limitation of 64bit only for Metro style development tools is only for BUILD. 32 bit versions of Visual Studio will support Metro style development in future pre-releases.

    • this includes Visual Studio Express for Windows and Blend Developer
      Previews as well as installing the Windows SDKs starting Friday, you
      will have access to Visual Studio 11 Developer Preview, install this
      on Windows Developer Preview with developer tools English, 64-bit

    • (x64) building Metro style applications is not supported on any other
      image

      Note: Visual Studio 11 Express for Windows Developer Preview
      will not be available for download separately

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