If you own an old Varranger 2 USB dongle from 2015-2018, you can likely find the 1.19 installer on archive.org or old backup CDs. Install it, plug in your key, and you are golden.
Once you have downloaded the software, setting it up is straightforward: Connect Your MIDI Controller varranger 2 1.19 download
vArranger 2 is a "Virtual Arranger" software designed for Windows. It allows users to play musical styles (rhythms) from famous hardware keyboards like Yamaha, Roland, Korg, and Ketron directly on a PC. If you own an old Varranger 2 USB
The developer (Jos Maas) officially sunsetted version 1.19 years ago. That means: plug in your key