Understand how long you can continue to use the Office 2013 version of Office 365 ProPlus

You can continue to receive updates for the Office 2013 version of Office 365 ProPlus until February 2017. After February 2017, there will be no additional updates for the Office 2013 version. Therefore, we recommend that you upgrade to the Office 2016 version of Office 365 ProPlus as soon as possible.

If you choose to continue to deploy the Office 2013 version of Office 365 ProPlus, you need to do the following:



Source: Prepare to upgrade Office 365 ProPlus to the Office 2016 version