I've got a new Lenovo Laptop running Windows 10. I installed my MS Office 365 on the computer, and everything seems to be running fine - with one exception. I use a local PST file for my Outlook, and my Yahoo Email account brought into Outlook. The program works fine, but when I close Outlook it doesn't close completely. I later try and open Outlook, but nothing happens - though when I reboot the computer I get the screen that says "Outlook is trying to shut down". I select "shut down anyway", and the computer reboots and then Outlook opens fine. So it appears as though the program is hanging up while shutting down. I would hate to have to go through completely reinstalling Office, and hopefully there's a simple solution.