Over time, these Office clients may encounter performance or reliability issues. Microsoft says that the reason for the move is simple – it won't be able to keep supporting older versions of Office if it wants to be able to continue to invest in its Office 365 infrastructure.Īfter October 13, 2020, ongoing investments to our cloud services will not take into account older Office clients. That's because Office 2016 for Mac reaches end of support on that date. In a support document spied by MacRumors, Microsoft says that Office 365 connectivity may be broken on that date, leaving Office 2016 for Mac users without access to their online data.Ĭonnecting to Office 365 services using Office 2016 for Mac isn't supported after October 13, 2020. Mac users who have Office 2016 for Mac installed might want to look at upgrading sooner rather than later, with Microsoft confirming it will not be supported beyond October 13, 2020.