Anonymous access to meetings should be available according to the road-map, but no combination of settings seems to allow for it.
Invited attendees always get "Only people with access to this org can join its meetings"
Is there a document showing what needs to set in order for this to work?
Did you figure this out? Having the same issue. I've gone through all of the settings in teams and anonymous/guest/external accesses are all enabled but still getting the message