Previously this hang up of my Autocad MEP was ocurring using Wndows 7, now using Windows 10 and it still happens. While in just about any command, AutoCad MEP will hang/freeze. When I look down and see a fresh email arriving every time the hang/freeze occurs. We tried un-checking Outlook notifications, but the situation persists. Turning off the outlook seems to help, but not exactly a solution. Any other ideas?