Comentário oficial
Hi Matt,
DDJ-RX engineers advised you to try updating Windows to the latest version using Windows Update in order for Windows to recognize DDJ-RX driver.
Because we assume that the Windows you use has not been updated to the latest since March 2, 2015, Windows recognized DDJ-RX driver where an invalid digital signature is used.
Thank you very much for your kind understanding and cooperation in advance.
Best regards,
CRM, Pioneer DJ