I have several workstations that when you open Outlook, in the lower right hand corner it says 'trying to connect' and takes several minutes before it will say Connected to Microsoft Exchange. Sometimes I have to force 'update folder' to get it to connect. This is happening on several (but not all) Windows 10 machines. We are running Exchange 2010 & Outlook 2010.
If I look at Event Viewer on a PC - it just shows that Outlook is hanging.