Hi, I am administering a cutover from Office Pro 2010 to Office Pro 2013 via our Office 365 E3 licenses. Before I start migrating mailboxes from our Exchange 2003 server to Exchange Online, I want to have our staff install Office Pro 2013 including Outlook 2013 so they can have time to review it before we switch to the Exchange Online server in a couple of days. I know Outlook 2013 is not compatible with our Exchange 2003 server but I was hoping to be able to setup Outlook 2013 to connect to my Office 365 email address while keeping my msi installed version of Outlook 2010 for my Exchange 2003 email address.
I am trying to test the capability of Outlook 2013 running side-by-side with my Outlook 2010 program. I have the "Click-to-Run" version installed on my Windows 7 64-bit machine however when I try to open Outlook 2013, I get an error message: "Another version of Outlook is currently running. Close it and try again."
In reading in TechNet and other sources, it clearly states that both programs can run simultaneously which is what I need to do but obviously something is not configured correctly.
Can you please help me get this configuration running or let me know if it is in fact not possible?
Thanks!
Frank