It was released on macOS on July 9, 2015, and on Microsoft Windows on September 22, 2015, for Office 365 subscribers. Microsoft Office 2016 is a version of the Microsoft Office productivity suite, succeeding both Office 2013 and Office for Mac 2011, and preceding Office 2019 for each platform. Here are working Microsoft Office 2016 Product Keys you should try:.Different Retail Suites of Microsoft Office 2016.