If you wanted to watch Home Alone 1 and Home Alone 2: Lost in New York, you won't be able to watch these titles on Disney+ for now. Twelve titles have disappeared from Disney's streaming service because of standing legacy deals. These also include Pirates of the Caribbean: On Stranger Tides, Garfield: A Tail of Two Kitties, Strange Magic, and Dr. Dolittle.
Disney mentioned that some offerings might leave the platform because of licensing deals it has signed in the past. And that these titles won't be available for download once they are taken off the service. But once the legacy licenses expire, Disney promises the films or shows will be coming back.
Source: Engadget