Sometimes the touch pen works fine, but sometimes it can not wok suddenly . When this problem occured, it might work fine latter, or it might not work for a long time. I had replace a new battery, and I had do all the updates, but this problem still occured, even I uninstalled and reinstlled the driver. The surface hub app always shows "Surface Hub can not conncet to the pen device", no matter what I do that others teached from the google. Can anyone please help me?