You're running a version of Microsoft Dynamics 365 for Outlook that is not supported for offline mode with this Microsoft ...

You're running a version of Microsoft Dynamics 365 for Outlook that is not supported for offline mode with this Microsoft Dynamics 365 organization {0}.
 You'll need to upgrade to a compatible version of Dynamics 365 for Outlook. 
 Make sure your current version of Dynamics 365 for Outlook is supported for upgrading to the compatible version.