Xaml Internal Error referencing Windows.Security.Cryptography.DataProtection

Question

I've created a new Universal Hub app, and in the Shared project I'm making use of Windows.Security.Cryptography.DataProtection.DataProtectionProvider

The Windows 8 project builds fine, but the Windows Phone app is giving this error:

1>C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\8.1\Microsoft.Windows.UI.Xaml.Common.targets(327,9): Xaml Internal Error error WMC9999: Cannot find type System.Security.Cryptography.AsnEncodedData in module System.dll.

Is this the right place to ask about this?

Damian

Answer 1

Hi Damian,

I think the problem should not be in your DataProtection namespace, it is fully supported by Windows 8 and Windows Phone 8.1.

However, from your error message, you are using AsnEncodedData Class somewhere, and this is not supported by Windows Store or Windows Phone. A really strange thing is why your Win8 project does not throw any exception.

--James

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Answer 2

Hi James,

I'm making no use of AsnEncodedData - I am just using Windows.Security.Cryptography.DataProtection ... it is a little strange that the error is flagged as an internal error.

Damian

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Answer 3

User error.  Turns out I had somehow added a reference to System.Security to the WindowsPhone project, which caused this error.  I removed the reference and all builds well now.

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