The DT-1 often requires a serial key. Cracked versions found in random ZIP files frequently fail to recognize the USB-MIDI connection of your drums. How to Get It Properly

for your module (TD-1, TD-07, TD-17, etc.) installed on your machine. Are you trying to install this on a Windows PC or a Mac?

If you are looking for an official practicing solution, Roland now recommends Melodics for V-Drums as the modern, downloadable alternative. Key Details about Roland DT-1