After you install MS Office Pro Plus, you have 5 days to use it before you must buy Office key to activate it. How to use product key. The Professional Plus edition offers the most tools, including Word, Excel, PowerPoint, OneNote, Outlook, Publisher, Access, Skype for Business. Getting a “5 user” / “5 computer” license to Office Professional Plus means that it is almost certain that you have a “bootleg”.
 
 

Microsoft office professional plus 2016 5 user free

 
Additionally, once you pay for the software, it’s yours to use for as long as you want.