Xbox One users can watch DVDs and Blu-rays offline by using the Xbox One’s built-in player. To do this, you must first create an Xbox Live account and then connect your Xbox One to the network. Once connected, open the player and select “Browse” from the main menu. Then, select “DVD or Blu-ray” from the list of options. After selecting a DVD or Blu-ray, click on the play button to start playback.