High Sierra leaves Microsoft Office for Mac 2011 behind, 2016 edition needs updating. 15 As 32-bit software, it will not run on macOS Catalina or later versions of macOS, though it is not officially supported on macOS High Sierra. Support for Office for Mac 2011 was originally slated to end on January 12, 2016, but because Office for Mac 2016 did not come out until July 2015, Microsoft extended support until October 10, 2017. For the best experience, we recommend you update Office to version 15.38 or later Office 2016 for Mac is fully supported on High Sierra. Since October 10, 2017, Office for Mac 2011* is no longer supported Outlook For Mac High Sierra 10.13.3 As of September 25, 2017, macOS 10.13 High Sierra is publicly available for all Mac users to install.
Word, Excel, PowerPoint, Outlook and Lync have not been tested on macOS 10.13 High Sierra, and no formal support for this configuration will be provided.
