title: Why am I getting a "package could not be registered" deployment error on Windows 10 UWP?
body: <p>I have an application targetted for Windows 10 and the UWP. The application correctly runs for x86 and x64 but when I try to run it on a mobile device targetting ARM on a Nokia Lumia 820 I get an error message during deployment:</p>
  
  <blockquote>
    <p>DEP0001 : Unexpected Error: Package could not be registered. (Exception from HRESULT: 0x80073CF6)</p>
  </blockquote>
  
  <p>There are other questions relating to this error that suggest <a href="https://stackoverflow.com/questions/23307643/deployment-error-in-windows-phone-8-1-app-with-capability-shared-user-certificat">it could be an issue with shared user certificates</a> or that <a href="https://stackoverflow.com/questions/27402238/windows-phone-8-1-deployment-error-when-trying-to-use-background-task-with-audio">you can't have Audio and Device use in the same background task</a> but I am <strong>not</strong> using either of these. There is also a suggestion that <a href="https://stackoverflow.com/questions/23125072/deploying-universal-application-results-in-package-could-not-be-registered">this may be due to a missing icon</a> however to the best of my knowledge I am including far more icons than I actually need. </p>
  
  <p>I have tried removing everything from my assets folder and removing it from the manifest but this also hasn't solved the problem. </p>
  
  <p><strong>Edit</strong> I've also tried creating a new blank universal project and that too runs on x86 and x64 but not on the mobile. </p>