'If you are a business end user, please confirm with your IT admin before you install Office 2016 Preview,' the site warned. On its website, Microsoft spelled out the requirements for running the preview, which include an Office 365 subscription such as Business Premium or Enterprise E3, and seemingly, administrative rights.

Because the latter is open to anyone, not only users of Office 365 in the workplace, it looks increasingly likely that Office 2016 for OS X will debut in final form before the Windows edition. Monday's preview followed the release of a broader-based preview of Office 2016 for Mac two weeks ago. 'However, through the course of the preview, customers should expect to see new features delivered through monthly updates.' Microsoft has said it will ship Office 2016 for Windows in the second half of 2015. 'This early build doesn't yet contain all the features we're planning to ship in the final product,' cautioned Kirk Koenigsbauer, who leads the Office 365 Client Apps and Services team, in a blog post.

Installing office 2016 on windows 10