A Microsoft file hosting and synchronization service.
What a truly customer hostile thing to do. There's a reason all of us had files-on-demand disabled, and you just suddenly decided to discard our preferences and harm us. Sure, I get it, it costs MS money to sync all those files all the time. But that's the service you used to offer, the service we used to love. I'm tired of MS causing problems. I'm going to see if there are other providers that behave the way the customer wants.