Adobe Acrobat DC on Terminal Server

We recently one of our client's Terminal Servers to Windows Server 2016 and the old Adobe Acrobat software they used seems to be having issues with advanced features involving Excel. If I buy 4 user licenses for Acrobat DC, will other non-licensed users still be able to access the basic/free functions of Acrobat DC or will the software lock them out?

Might seem like a stupid question but would rather be sure before using someone else's money.