title: UWP: Deployment error: Cannot register the xxxxx package because the extension is missing an EntryPoint or StartPage attribute. (0x80073cf6)
body: <p>I try to create an JS UWP App with a win32 fullTrustProcess AppService extension. I followed the example here: <a href="https://github.com/Microsoft/DesktopBridgeToUWP-Samples/tree/master/Samples/AppServiceBridgeSample" rel="nofollow">https://github.com/Microsoft/DesktopBridgeToUWP-Samples/tree/master/Samples/AppServiceBridgeSample</a> but when I try to deploy to local machine (Windows 10 with anniversary update) then I get a deployment error:</p>
  
  <pre><code>DEP0700 : Registration of the app failed. AppxManifest.xml(49,10): error 0x80080204: Cannot register the xxxxx package because the extension is missing an EntryPoint or StartPage attribute. (0x80073cf6)
  Deployment of the application to the target device failed.
  </code></pre>
  
  <p>The extension part of the manifest:
  </p>
  
  <pre><code>&lt;Extensions&gt;
      &lt;uap:Extension Category="windows.appService"&gt; &lt;!-- line 49 from error --&gt;
          &lt;uap:AppService Name="CommunicationService" /&gt;
      &lt;/uap:Extension&gt;
      &lt;desktop:Extension Category="windows.fullTrustProcess" Executable="bin\mywin32.exe" /&gt;
  &lt;/Extensions&gt;
  </code></pre>