: Check the paper sleeve of the installation disc or a separate "License Key" card included in the original box.

If you have proof of purchase, you can contact Virtual DJ Support . They are often able to help owners recover their legitimate licenses. Better Alternatives to Searching for Serial Numbers

: Look for a sticker on the underside of your hardware. On many Pioneer and Hercules devices, the VirtualDJ LE key is printed directly on the bottom panel.