The office product key is a unique 25 alphanumeric digits code that you can purchase online or as in card. If you have purchased the Office copy of keycode, check the order email, or have a retail card, check the instructions and find the code. Then, visit  office.com/setup and enter this code here. With this www.office.com/setup product key’s help, you can download and install Microsoft Office setup or even renew the subscription.