During the norton setup process, you are offered to enroll in Norton Automatic Renewal.
From your web browser, go to norton site.
Click Sign in.
If you do not have a Norton account, click create a new account and complete the sign-up process.
In the Get Started page, click Enter A New Product Key.
Type the product key and click next.
Your product key is a combination of alphabetic and numeric characters.
Read the License and Services Agreement and click Agree.
In the Authorization page, update your billing address and credit card details.
Read the Subscription and Automatic Renewal Payment Authorization.
Click Turn on Automatic Renewal or Start Subscription.
Click Agree & Download with norton setup.
Follow the instructions displayed to Run or Save the Downloader file.
Once the Norton installer is executed, your product is downloaded, installed, and activated