For the best experience, use the latest version of any operating system specified above. Product functionality and feature availability may vary on older systems. As new major versions of macOS are made generally available, Microsoft will drop support for the oldest version and support the newest and previous two versions of macOS. MacOS: Office for Mac is supported on the three most recent versions of macOS. Graphics hardware acceleration requires DirectX 9 or later, with WDDM 2.0 or higher for Windows 10 (or WDDM 1.3 or higher for Windows 10 Fall Creators Update). Windows OS: 1280 x 768 screen resolution (64-bit Office required for 4K and higher) MacOS: Intel or Apple Silicon (As supported by the three most recent versions of macOS.)