If your Mac supports Mac OS X 10.14 Mojave, you can upgrade Mac OS X. The following Macs can upgrade to Catalina: If your Mac supports Mac OS X 10.15 Catalina, you can upgrade Mac OS X.
Process Upgrade to Mac OS X 10.14 Mojave or Mac OS X 10.15 Catalina Compatibility If you do not wish to upgrade at this time, the recommended application, Microsoft Outlook for Mac works with older versions of macOS. While performing an upgrade is straight-forward, you may want assistance from local support before proceeding. In order to use Mac Mail with MFA, you will need to upgrade to Mac OS X 10.14 Mojave or newer. This tutorial applies to the following operating system(s):
