Enter your Office 2016 product key when you are prompted to its respective field
Execute the instructions if displayed on the screen and complete the process
To check whether the product is activated or not, launch a utility and see if there is a red banner at the top of the page with Activation alert. In such a case, you need to perform activation process again or else get help visit Office.com/setup. Your Office product is now activated. If you encounter any issue during the process, get in touch with Office setup customer support and receive easy instructions to fix the problem.