This compatibility with Outlook does not include the Exchange Online Kiosk or Office 365 Enterprise K1 plans.
Previous versions of Outlook, such as Outlook 2010 and Outlook 2007, may work with Office 365 with reduced functionality.
For subscriptions that do not include the fully installed Office applications: Users can connect the following versions of Outlook to their business-class email, so they can use the rich client application they already know: the latest version of Outlook, Outlook 2013, and Outlook 2011 for Mac.