I have a new MacBookPro.
Outlook 15 was working on my old mac.
Used migration assistant to setup new laptop.
But get this error with Outlook.
Was able to activate Office365 when opening Excel
Am able to login online with same username/password.
But not Outlook 15
Did try changing region setting to US (even though I am in the UK) as suggested elsewhere, but made no difference. So put it back to UK now.
So a bit annoying. Everything else on new Mac seems to be working fine, other than Outlook...