This is a reminder that Microsoft will be ending support for Office 2016 and Office 2019 on October 10, 2023. Microsoft will not take any active measures to block older Office versions from connecting to Microsoft 365 services if they are in extended support and are kept up to date. This includes Office 2019 and Office 2016 after October 10, 2023. Both of these versions are in extended support until October 14, 2025.
Older Office versions might still be able to connect to Microsoft 365 services, but that connectivity isn’t supported. In practical terms, this means these older Office versions might not be able to use all the latest functionality and features of Microsoft 365 services. In addition, over time, these older versions might encounter other unexpected performance or reliability issues while using Microsoft 365 services. As Microsoft makes improvements to Microsoft 365 services, they will not be taking into account or testing with these older Office versions.
To provide the best experience with using Microsoft 365 services, we strongly recommend that you move off older Office versions to versions supported for connecting to Microsoft 365 services.