How can I watch videos I've purchased or rented on Xbox?

Minimum Requirements: 

The minimum operating systems that you can view your purchased and/or rented content on Xbox are Xbox One X/S and Xbox Series X/S.

To watch purchased and/or rented videos on Xbox: 

1. Open the seller's app and log in if prompted. 
2. From the Browse page, press B on your controller. 
3. Select Library from the menu.
4. This will display both the My List and Continue Watching rows. 
5. Select a video to begin watching. 

Note: Xbox is powered by Universal Windows Platform (UWP).