PSIM 64-bit can be installed on Windows 64-bit, and it is compatible with Matlab 64-bit (for SimCoupler use) and JMAG 64-bit (for MagCoupler use). It is not compatible with Matlab 32-bit and JMAG 32-bit. PSIM 32-bit can be installed on both Windows 32-bit and Windows 64-bit. It is compatible with Matlab 32-bit and JMAG 32-bit. It is not compatible with Matlab 64-bit and JMAG 64-bit. ***Note, with the v2020a version release, 32-bit is no longer offered, only 64-bit.