A Microsoft file hosting and synchronization service.
That is exactly what I was saying when I said "Login to OneDrive." I'm on an enterprise account, and whenever we have a required password update, I have noticed that there are instances where OneDrive is logged out. Usually, you can tell if you tell OneDrive to log in. Also, when I had the issue, I could see the OneDrive icon in my task tray, but I noticed that when I opened it, I was not logged in.