title: UWP App with BackgroundTask won't build anymore Error 80080204
body: <p>I have a UWP app that doesn't seem to build now. What's odd is I have another project that's very similar to it, but it builds just fine. The background task isn't an audio bg task. What is suddenly causing this?</p>
  
  <blockquote>
    <p>Validation error. error 80080204: App manifest validation error: Line
    43, Column 12, Reason: If it is not an audio background task, it is
    not allowed to have EntryPoint="App.TokenRefreshBackgroundTask"
    without ActivatableClassId in
    windows.activatableClass.inProcessServer.</p>
  </blockquote>
  
  <p>Targeting build 18362.</p>