Visit xfinity.com/authorize, sign in with your Xfinity account, enter the activation code displayed on your device, and follow the prompts to activate and start streaming.
 
xfinity.com/authorize: Activate Your Device

The steps to activate your device on xfinity.com/authorize:

  1. Open your device and launch the Xfinity app or website.

  2. Note the activation code displayed on your screen.

  3. Visit xfinity.com/authorize on a web browser.

  4. Sign in to your Xfinity account with your username and password.

  5. Enter the activation code displayed on your device.

  6. Follow the prompts to complete the activation process.

  7. Once activated, you can start streaming on your device.