The methods given above are the options to directly change the product key in your Office 2016 / 2019 application.
If you’re using Office 2016, click on the Change Product Key link instead.
ACTIVATE MICROSOFT OUTLOOK 2016 FOR MAC
On the right side, click on the Change License button under the Office logo. The Teams Meeting button in Outlook for Mac will appear in the Outlook for Mac ribbon if Outlook is running production build 16.24.414.0 and later and is activated with a Microsoft 365 or Office 365 client subscription. Open your Word or Excel application included in your Office 2019 / 2016 suite.Method 1: Change Office 2019 / 2016 Product Key from Office Application Your Office license has expired and need to replace it with a new product key? Need to change Office product key because it’s already activated by the maximum number of times? In this tutorial we’ll show you 2 easy ways to change Office 2019 / 2016 product key without re-installing.