The most common solution for Windows users is jBridge (by Jorgen Bergström). This is a universal VST bridge that converts 32-bit plugins to 64-bit.
You can download high-quality SoundFonts (SF2) of the Roland Sound Canvas (e.g., "Roland SC-55 SoundFont"). Load them into the free Sforzando (64-bit) plugin by Plogue. Edirol Hyper Canvas 64 Bit
If you do not want to pay for the Sound Canvas VA, and you want to use your original Edirol Hyper Canvas license (or abandonware copy), you have three options. The most common solution for Windows users is
This method bypasses the 16-bit installer logic entirely. We will manually place the files where they belong. Edirol Hyper Canvas 64 Bit