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:
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Open your device and launch the Xfinity app or website.
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Note the activation code displayed on your screen.
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Visit xfinity.com/authorize on a web browser.
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Sign in to your Xfinity account with your username and password.
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Enter the activation code displayed on your device.
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Follow the prompts to complete the activation process.
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Once activated, you can start streaming on your device.