In iTunes' preferences pane for Restrictions, Apple Music is grayed out and checked as disabled. Any idea how to enable this? The lock is not engaged at the bottom.
Looks like I had a Device Profile created by my administrator which disabled Apple Music, among other things.
Probably you have some custom "Profile" in your Mac try to remove it.
- check your "Profiles" list (in terminal)
sudo profiles list.
sudo profiles remove -identifier (identifier from the previous step).