Its compounded by the fact that we all had Lumias (I still like the UX over anything out today) and some used existing hotmail/live accounts while others create

Its compounded by the fact that we all had Lumias (I still like the UX over anything out today) and some used existing hotmail/live accounts while others created new ones, even though they had existing ones. At this point they have no idea what they used any more for what and it's often a hassle when they switch phones or get logged out.