Windows: Windows 10 SAC, Windows 10 LTSB 2016, Windows 10 LTSB 2015, Windows 8.1, Windows 7 Service Pack 1, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, or Windows Server 2008 R2. Please note Microsoft 365 Apps for enterprise will not be supported on Windows 10 LTSC 2019 at release. Microsoft 365 Apps for enterprise will not be supported on any Windows 10 LTSC/LTSB version or on Windows Server 2012 R2 or older after January 2020. Microsoft 365 Apps for enterprise will be supported on Windows Server 2016 through October 2025.

macOS: Office for Mac is supported on the three most recent versions of macOS. When a new version of macOS is released, the Office for Mac Operating System requirement becomes the then-current three most recent versions: the new version of macOS and the previous versions.

Product functionality and feature availability may vary on older systems. For the best experience, use the latest version of any operating system specified above.