I have set up Office 365 E3 today, just the admin account for now, and having been playing with it on a new Windows 10 PC and laptop, both of which are already running Office Enterprise 2016 and share data through OneDrive while my server is awaiting replacement.
I downloaded this from the Microsoft Action Pack Online Services which I subscribe to and this also offers Intune, Azure AD and Enterprise Mobility Suite.
I wanted to check out the Intune to see how well it worked on Android and IOS devices in using both the Office 365 and installed Office 2016, however, that download would not let me use the account I created for Office 365 and insisted on me creating a new one which takes me to a dashboard.
I am not sure why it would not allow me to use the existing account and thought I had better ask for advice before proceeding further,
Thanks for any assistance.