Set up your Chromecast device (3rd gen or older)

The Google Home app walks you through the steps for Chromecast and Chromecast Ultra setup.

If you've already set up your Chromecast on a mobile device, you don't need to set it up again on a different mobile device if all devices are on the same Wi-Fi network.

What you need to get started

• A Chromecast device (3rd gen or older)
• The latest version of the Google Home app
• A Google Account
• A TV or display device with an HDMI input
• An Android phone or tablet with Android 9.0 or later that supports a 5 GHz connection
• Access to a secure Wi-Fi network

Important: Support for Chromecast (1st gen) has ended. It no longer receives software or security updates, and Google doesn't provide technical support. Users may notice a degradation in performance.

Availability and performance of certain features, services and applications are device- and network-dependent, and might not be available in all areas. Subscription(s) may be required, and additional terms, conditions or charges may apply.

Set up Chromecast or Chromecast Ultra

Step 1: Plug in your Chromecast device

Important: Chromecast Ultra won’t work with any other USB cable, or any USB cable plugged into a TV. You must use the power supply included in the Chromecast Ultra box.

1. Plug the included USB power cable into your Chromecast.
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2. Plug your Chromecast into any open HDMI port on your TV.
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3. Plug the power supply into an open outlet.
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The Chromecast Welcome screen should appear. If it doesn’t, press the Input or Source button on your display’s remote control until the screen appears.

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Step 2: Set up your Chromecast in the Google Home app

To get started:

1. Make sure your phone’s Bluetooth is turned on.
2. Open the Google Home app .
3. From the Home tab, tap Add Device Scan QR Code .
4. Choose the device with the same number from the Welcome screen.
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5. Confirm the number on the screen.
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6. Choose your Wi-Fi network. Make sure to connect your Chromecast to the same secure Wi-Fi network you’re using on your phone or tablet.

   Phone or tablet Wi-Fi	Google Home app Wi-Fi
7. Your Chromecast is now set up. You should see a background image, the time, and your device's name.
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Troubleshoot setup

If setup didn't work, try these following steps:

1. Reboot your Chromecast.
2. Unplug your router, then plug it back in.
3. Connect manually to your Chromecast's service set identifier (SSID).
   • Open your phone's Settings app, then tap Wi-Fi and connect to the Chromecast SSID.
   • Open the Google Home app and try to set up your device again.
4. Factory reset your Chromecast.
5. Contact support.