Office 365 "The fine print" popup message - is it legitimate?

Damien;

Your suggestion to use Office 2016 instead of Office 365 to eliminate "The Fine Print" pop-up is null.  We have multiple Office 2016 products running in our shop and I am seeing the pop-up on about half of them.  It seems the more current the user's MS updates to the OS and Office product are, the more prevalent the message.  I think your idea about the update to the license agreement and the forced acceptance of the new terms, is probably correct.  It would be nice of MS to alert us to this fact, based on the realities of the world we live in.  I instructed my users to not accept the message until we got an answer.  I scanned the machines and did not find malware.  Next step is to accept the message and see what happens.