Updates for Office 2016 for Mac are available from Microsoft AutoUpdate (MAU). For release information for Office 2019 for Mac, see the release notes and update history for Office for Mac. Office 2019 for Mac is the most current version that’s available as a one-time purchase.For release information for Office for Mac, which is the version that comes with Office 365 subscriptions, see the release notes and update history for Office for Mac.For release notes for Office 2016 for Mac releases prior to September 2018, see Release notes for Office for Mac.For security reason, Microsoft has deprecated the use of SHA-1.