Access your Xfinity account online and navigate to the Security section. Choose "Norton Security Online" from the available options. Initiate the download process and wait for it to complete. Once the download is finished, execute the downloaded file to start the installation process. Follow the on-screen instructions carefully to complete the installation. If prompted, authenticate using your Xfinity credentials. Allow Norton to finalize the setup and activation. Ensure your device remains connected to the internet for updates. Congratulations! xfinity.com/authorize Norton is now installed on your device, providing comprehensive protection.