To run that sample, you'll need to scroll down to the bottom of the QML code an uncomment the AuthenticationView. It is a little confusing, but we need to do this because these samples are pulled into the sample viewer, which also has an AuthenticationView declared. Having multiple instances of it would result in lots of sign in prompts when an authentication challenge came through, so we chose to comment it out in the code. Hopefully that'll make it work for you. If you still have issues or you have suggestions on a better way to do this, please let us know. Thanks!