Why can't I start the game after it's downloaded?

I've just finished downloading Skyrim SE for my Xbox One, but I'm not able to start the game. Every time I want to open the game, it wants to update the game. Unfortunately, the update never starts. Instead I get the message that there was a problem.

My internet works, so I don't think that's the problem.

Can anyone help me?

• You probably just need to perform a system update for the Xbox.
  Go to System → Settings → Updates & Downloads, and select 'Console update available'.
  After that process has finished, try updating Skyrim again.

• Alternatively, you can give reinstalling the game a try.