Package in multiple macs and devices, how does it differ from the Office Home & Student 2019 package available as a one-off purchase if updates are not possible? Do both versions have the possibility of customising the main ribbon? Hence, if it's true that it will run with my OS X 10.11, apart from the possibility of using this However, on Microsoft's page dedicated to Office 365 Personal, it clearly states that you need at least High SierraĮlsewhere I read that it would still work with El Capitan, except that it won't run the features available if I were running it on one of the last three OS Xs. I have an old iMac which is not compatible with OS X later than El Capitan (10.11) and am considering subscribing to Office 365 Personal.