Do I need to be connected to the internet all the time?
Even though users don’t need to be connected to the Internet all the time to use Office 365 ProPlus, users must connect to the Internet at least once every 30 days. This is so that the status of their
Office 365 ProPlus subscriptions can be checked.
If users don’t connect within 30 days, Office 365 ProPlus goes into reduced functionality mode.
After users connect to the
Internet and their subscription status is verified, all the features of Office 365 ProPlus are available again.