Official support largely ended with Windows Vista 32-bit. Canopus explicitly stated that the DVStorm series would not receive 64-bit drivers or support beyond EDIUS v4.x.
Windows XP 32-bit (Home or Professional) and Windows 2000 remain the most stable environments. Canopus Dvstorm2 Pro Drivers
Some users have reported limited success on Windows 7 32-bit by using older EDIUS 4.56 drivers. However, running a 64-bit OS is generally a no-go, as 64-bit programs cannot communicate with the legacy 32-bit drivers. 2. Where to Source Your Drivers Official support largely ended with Windows Vista 32-bit