Office 2016 and Office 2019 will not be supported for Microsoft 365 From October 2023
Older versions of Office (2016 and 2019) will not be supported for connecting to Microsoft 365 from October of this year.
This means that these older versions might not be able to take advantage of all the latest functionality and features of Microsoft 365 services. There may also be performance or reliability issues when using these products.
To continue to get the best experience with using Microsoft 365 services, we recommend you upgrade your older Office to versions supported for connecting to Microsoft 365 – Microsoft 365 version 2301.