The Disney+ streaming service launches on November 12. And while the roster of new Disney+ TV shows and original movies are certainly enticing, one thing that makes the service so attractive to parents is its access to the library of more than 600 Disney films and TV shows going all the way back to the 1930s. Films that were previously in the Disney "vault" and unable to be purchased will suddenly become available again. And, while it used to cost more than $20 a pop to own the "diamond" Blu-ray edition of an animated classic (if you could get one), now parents will get all of the available movies for just $7/month.

There's just one big caveat for people who are signing up for Disney+ to get access to the complete library: Not everything will be available at launch — or ever. The Twitter account @NotOnDisneyPlus combed through all the old titles to come up with a list of what's going to be missing from the site. It identified four reasons why some movies would be skipped: antiquated or controversial depictions of non-white races and cultures (so no Song of the South), rights issues for movies Disney co-produced with another studio, deals with other streaming services that pre-date Disney+ that have to expire before they can be ported over to the new service, and movies that are too new to stream. Before you get your heart set on watching some forgotten Disney classic with your kids, scan this list of movies that, according to @NotOnDisneyPlus, will not be on Disney+.