Only had one hiccup so far which was billing issues. I added money to my Microsoft account but kept getting errors everytime I tried to purchase something. Turns out that Microsoft's system duplicated my gamertag and the money showed on my account on xbox but I couldn't spend it because it was added to my duplicated account
Not really Xbox One issue as it wasn't the console it's self.
My roommates Kinect broke however. Won't turn on says it's unplugged on both his and my Xbox