How do I change back to a profile picture?

We are removing the ability to upload personal profile pictures as avatars. You can build an avatar within the Profile tab. If you choose not to build an avatar, your profile picture will be represented by the first letter of your display name. You won't be able to upload a personal photo or image as a profile picture, you can only create or edit the avatar in the avatar builder.

 

You can read more about this change on our blog here.