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The drop will come as Apple releases macOS 11 Big Sur.
What you need to know
- Office 365 for Mac apps are set to drop support for macOS High Sierra next month.
- Support will officially end on November 10.
- This keeps with Microsoft's practice of supporting the latest three macOS updates.
365 Office Sierra 10.12. 60
As we approach the release of macOS 11 Big Sur, Microsoft is preparing to shift its Office 365 support away from another older version of macOS. Specifically, Office 365 apps will no longer support macOS 10.13 High Sierra as of November 10. From that point, only macOS 10.14, 10.15, and 11 will be supported with the Office 365 suite.
In an update to the Office 365 message center (via OnMSFT), Microsoft said:
As of the Microsoft 365 for Mac November 2020 update, macOS 10.14 Mojave or later is required to receive updates to Word, Excel, PowerPoint, Outlook and OneNote. If you continue with an older version of macOS, your Office apps will continue to work but you will no longer receive any updates including security updates.
This move stays in line with Microsoft's practice of supporting the latest three macOS releases with its Office 365 suite. Currently, those include macOS 10.13, 10.14, and 10.15. After the release of macOS 11 Big Sur, the oldest version supported will be 10.14.
365 Office Sierra 10.12. 64
As of the December 2020 (build 16.44) update for Microsoft 365 for Mac or Office 2019 for Mac, macOS 10.14 Mojave or later is required to receive updates to Word, Excel, PowerPoint, Outlook and OneNote. Office 2019 is an upgrade to earlier versions of on-premises Office, including Office 2016. Microsoft 365 is the subscription service of Office, and it will have the most creative, collaborative, intelligent, and secure features to go along with cloud connectivity. The following Microsoft 365 features are not included in Office 2019 for Windows. To run Microsoft Office at the moment, you’ll need macOS 10.12 (Sierra), 4 GB RAM and 10 GB of available disk space. The difference between Office 2019 and Office 365 for Mac. You can still buy Microsoft Office without getting into a subscription. Specifically, Office 365 apps will no longer support macOS 10.13 High Sierra as of November 10. From that point, only macOS 10.14, 10.15, and 11 will be supported with the Office 365 suite.
365 Office Sierra 10.12. 64-bit
As of the release of Big Sur, macOS will support both Intel and ARM-based Macs. Apple is expected to launch Macs sporting its own ARM-based chips later in 2020, and the company says Microsoft's Office apps are already running on ARM-based Macs.