If you’re on an unsupported version of macOS, your Office apps will still work but you would no longer receive any updates including security updates. What if I don't update macOS to a supported version?

Learn more about the latest macOS releases.

The October 2022 update (16.66) is the last build to support macOS Catalina 10.15. Note that new installs of Microsoft 365 for Mac also requires macOS Big Sur 11 or later. Upgrading your operating system to macOS Big Sur 11 or later will allow Office updates to be delivered for your apps. If you continue with an older version of macOS, your Office apps will still work, but you'll no longer receive any updates including security updates. But because Apple's policy is to support the newest version of macOS and the two previous versions, there may be Macs that continue to receive operating system security updates but that will not be served by Microsoft with new Office features.Īccording to analytics vendor Net Applications, last month macOS Sierra and High Sierra accounted for a combined 78% of all Mac user share.Starting with the November 2022 update (16.67) macOS Big Sur 11 or later is required receive updates to Word, Excel, PowerPoint, Outlook, OneNote, and Defender. requirement becomes the then-current two most recent versions at that time: the new version of macOS and the previous version,' a Microsoft FAQ said. 'When a new version of macOS is released, Office 2019 for Mac's. 'Mojave,' this fall, Office 2019 and Office 365 must be running on systems powered by that edition, or its predecessor, High Sierra, to receive new feature updates. Office 365 for Mac sports the same requirement. Previously, Microsoft said that Office 2019 for Mac - the 'perpetual' license version of the suite - would be supported on only the two latest editions of macOS. The same caveat will apply if the user declines the September refresh to Office 2019: No new features will be offered the applications. Those that are not will continue to receive Office security updates but will no longer get new feature updates. At that time, the Office applications - Word, Outlook, Excel and PowerPoint - will be updated from their current Office 2016 designations to the new Office 2019 labels, assuming that the suite is running on a Mac powered by macOS 10.12 (Sierra) or 10.13 (High Sierra).

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