There seems to be a strange issue where Xbox users cannot purchase Xbox 360 games from the Xbox One. We’ll explore why this is happening and what you can do to get around it.
Microsoft Store Articles and Guides
Master the Microsoft Store for Xbox with tips on discovering new titles, managing downloads, and troubleshooting purchase or install issues.
Speed Up Slow Downloads on Xbox One|S|X and Series S|X
Learn different ways to fix or speed up slow, stalled, paused, or stopped game downloads on Xbox game pass.