To activate Hulu on your Vizio Smart TV, follow these steps. First, ensure your TV is connected to the internet and open the Hulu app. You’ll see an activation code displayed on your screen. On a computer or mobile device, go to www.hulu.com/activate. Sign in to your Hulu account, and enter the code from your TV. Click "Activate" to complete the process. Your TV screen should refresh, and you'll be able to start streaming Hulu content. If you encounter any issues, make sure your TV software is up-to-date and try restarting both your TV and internet router.