I'm running Outlook 2013 on a new Dell tablet running Win 8.1. When I run Outlook on the tablet, Outlook will not remember the size of messages, either in read mode or write mode. They always come up as full screen. I have tried adjusting the size and hitting CTRL X to exit, but this is not saving the message sizes. When I attach an external monitor, extend the display, and run Outlook from the 2nd monitor screen, messages behave correctly in sizing. So, this must have something to do with the Dell tablet/8.1 display. Any thoughts?