Microsoft's support for Office 2016 for Mac and Office 2010 will reach their end of support on October 13, 2020. After this date, Microsoft will no longer provide technical support, bug fixes, or security updates for Office 2016 for Mac and Office 2010. You will still be able to use these versions of Office, but over time, organizations may face an increase in security risks and compliance issues.
Also, as previously announced, after October 13, 2020, customers will need to be running Microsoft 365 Apps, Office 2019 or Office 2016 to connect to Office 365 services. Microsoft will not take any active measures to block legacy versions of the Office client from connecting to Office 365 services, but these older clients may encounter performance and/or reliability issues over time. For related Office client support timelines, see the Microsoft 365 and Office system requirements matrix.
Key Points:
Because of the changes listed above, we strongly recommend that you upgrade to one of the latest versions of Office as soon as possible:
A key difference between Microsoft 365 Apps and Office 2019 is that Microsoft 365 Apps is updated on a regular basis with new features. Office 2019 has the same set of features that it had when it was released in October 2018. Prior to deploying either version, please check the System requirements for Microsoft 365 and Office as well as the Microsoft 365 and Office system requirements matrix to ensure that the version you choose is supported on the operating system you are using.
In order to identify users on Office 2010 and Office 2013 clients, deploy Microsoft 365 Apps or a supported non-subscription version of Office to those desktops, and ensure that they will have supported access to Office 365 services after October 13, 2020, there are two Microsoft Endpoint Configuration Manager dashboards (updated as part of version 1902) that you can use:
Additional information: