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Office 2016 for Mac, which is no longer supported, had version numbers of 16.16 or lower. Since the 'major' version (16) hasn't changed between Office 2016 for Mac and Office 2019 for Mac, application settings, including policies, preferences, and preference domains are similar between the two versions. Microsoft Office 2016 - Unmistakably Office, designed for Mac. The new versions of Word, Excel, PowerPoint, Outlook, and OneNote provide the best of both worlds for Mac users - the familiar Office experience paired with the best of Mac. If you already use Office on a PC or iPad, you will find yourself right at home in Office 2016 for Mac.
As of October 13, 2020, only these versions of Office are supported for connecting to Office 365 (and Microsoft 365) services:
September 2018 release Office 2016 for Mac is a version of Office that’s available as a one-time purchase from a retail store or through a volume licensing agreement. It will be supported with security updates and bug fixes, as needed, until October 13, 2020. The minimum supported macOS for Office 2016 for Mac is 10.10 (Yosemite). Support for Office 2016 for Mac ended on October 13, 2020. Upgrade to Microsoft 365 to work anywhere from any device and continue to receive support.
Examples of Office 365 services include Exchange Online, SharePoint Online, and OneDrive for Business.
For Microsoft 365 Apps, you must be using a supported version. For a list of which versions are currently supported, see Update history for Microsoft 365 Apps.
Important
We won’t take any active measures to block other versions of the Office client, such as Office 2013, from connecting to Office 365 services, but these older clients may encounter performance or reliability issues over time.
After October 13, 2020, ongoing investments to our cloud services will not take into account older Office clients. Over time, these Office clients may encounter performance or reliability issues. Organizations that use these older clients will almost certainly face an increased security risk and may find themselves out of compliance depending upon specific regional or industry requirements.
Therefore, administrators should update older Office clients to versions of Office supported for connecting to Office 365 services.
We recommend that you upgrade older Office clients to a subscription version of the Office client, such as Microsoft 365 Apps for enterprise. The most up-to-date subscription versions of the Office client are always supported connecting to Office 365 services.
We provide various services to help you upgrade to subscription versions of the Office client. The following list provides some examples of resources that are available:
After October 15, 2020, you must be using at least TLS 1.2 to connect to Office 365 services. For more information, see TLS 1.0 and 1.1 deprecation for Office 365 and Preparing for TLS 1.2 in Office 365 and Office 365 GCC.
There are some changes planned related to the use of Basic Authentication with Exchange Online. For more information, see Basic Authentication and Exchange Online – April 2020 Update.
Skype for Business Online will be retired on July 31, 2021. For more information, see Skype for Business Online retirement.