Old EndPoint Installer->Windows 10

Hello,

Recently a florist was attempting to install their vendor's included copy of Endpoint.  The problem is the vendor has not updated the software in a Greek age and therefore the FTP is offering 12.1MP1, something well before Windows 10 let alone AE.  The goal is to install EndPoint with a newer install, as that one will not complete, and employ the license included from the vendor's dated EndPoint.  Can anyone assist in this process?

Thank you in advance.

Ryan