1 Go to https://my.norton.com/ and sign in. Caution: If you do not yet have an account or if you have not yet activated your product key, first follow the steps for registration. 2 In your dashboard, click "Download" next to Norton 360. 3 Click on "Agree and Download". 4 Click on the downloaded file in the top‑right corner of your browser. If you don’t see the file, press CTRL + J on your keyboard to open your download history, then click the file at the top. 5 Click "Install Norton 360". 6 Click "Start Setup" and follow the steps on the screen. Click “Done”. Once you click it, the installation is complete and your device is protected.