title: Certification test error on supported API test
body: <p>I have an error from the <strong>certification</strong> test and I can't seem to resolve it. Errors found are:</p>
  
  <blockquote>
    <p>• This API is not supported for this application type -
    Api=System.Security.Cryptography.Aes. Module=MSCORLIB.
    File=System.Core.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.Security.Cryptography.ICryptoTransform. Module=MSCORLIB.
    File=System.Core.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.Security.Cryptography.Aes.#ctor. Module=MSCORLIB.
    File=System.Core.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.SystemException. Module=MSCORLIB. File=System.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.SystemException.#ctor. Module=MSCORLIB. File=System.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.SystemException. Module=MSCORLIB. File=System.Xml.dll.</p>
    
    <p>• This API is not supported for this application type -
    Api=System.SystemException.#ctor. Module=MSCORLIB.
    File=System.Xml.dll.</p>
  </blockquote>
  
  <p>The <code>mscorlib module</code> is part of the <code>Windows Phone 8.1 framework</code>. The project is for <code>Windows Phone 8.1 RT</code>, a universal app.</p>
  
  <p>What I have tried to resolve the issue is starting a new project to refresh the references, but it didn't do anything. I've tried adding and removing libraries, but it didn't do anything. I've tried removing the assembly, but I can't seem to.</p>
  
  <p>How do I resolve this error?</p>