Windows: Windows 10, 8.1, 8, 7, Vista, XP, 2008, or 2003 Pentium-compatible processor 512 MB internal memory 20 MB free hard disk space Mac: MacOS Sierra (10.12), OS X 10.11 (El Capitan), OS X 10.10 (Yosemite), 10.9 (Mavericks), 10.8 (Mountain Lion), or 10.7 (Lion) Intel processor 1 GB internal memory 30 MB free hard disk space 64-bit and 32-bit working environments are fully supported on both Windows & Mac