End of support for Office 2016 for Mac - Microsoft Support
https://support.microsoft.com/en-us/office/end-of-support-for-office-2016-for-mac-e944a907-bbc8-4be5-918d-a514068d0056
Oct 13, 2020 · Although you'll still be able to use Office 2016 for Mac, you will no longer receive security updates and bug fixes after October 13, 2020. Upgrade to a newer version of Office so you can stay up to date with all the latest features, patches, and security updates. Upgrade options include:
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