Change Your Chromecast's WiFi in the Google Home App

The fastest way to change your Chromecast's WiFi network is through the Google Home app on your phone or tablet. Open the app, find your Chromecast device in the list, tap the settings icon (three dots or a gear), and select "WiFi" or "Network settings." The app will walk you through forgetting the old network and connecting to a new one. This takes about two minutes and works whether you're switching to a different network in your home or moving your Chromecast to a new location.

If you don't have the Google Home app installed, read it from the Google Play Store (Android) or the App Store (iOS). Make sure your phone is connected to the same WiFi network as your Chromecast before you start, or at least close enough to see it in the app.

Key Takeaways

  • The Google Home app is the standard way to change your Chromecast's WiFi—open it, find your device, tap settings, and select WiFi or Network settings.
  • Your phone must be on the same WiFi network as your Chromecast, or close enough to detect it, for the app to find and control the device.
  • If the app cannot find your Chromecast, restart both the device and your phone, then try again.
  • Factory resetting your Chromecast erases all settings and forces you to set it up from scratch, including WiFi—use this only if the app method fails.
  • Some Chromecast models have a physical reset button on the back; holding it for 10 to 15 seconds triggers a factory reset.

Step-by-Step: Using the Google Home App

Open the Google Home app and look for your Chromecast device in the list of connected devices. If you have multiple Chromecasts, they will be labeled by name or room. Tap the device you want to change.

Once you open the device page, look for the settings icon in the top right corner—it looks like three vertical dots or a gear symbol. Tap it and scroll down to find "WiFi" or "Network settings." Tap that option. The app will show you the network your Chromecast is currently connected to and give you the option to forget it.

Select "Forget" or "Disconnect," and the Chromecast will drop its current connection. The app will then scan for available networks in range. Choose the network you want to connect to from the list, enter the password if it is password-protected, and wait for the connection to complete. You should see a confirmation message within 30 seconds to two minutes.

What to Do If the Google Home App Cannot Find Your Chromecast

If the app shows no devices or your Chromecast does not appear in the list, the most common cause is that your phone is not on the same WiFi network. Check your phone's WiFi settings and make sure it is connected to the same network as your Chromecast. If your Chromecast is already offline (because you are trying to change its network), this step may not work—move to the factory reset method instead.

If your phone is on the correct network but the app still does not see the device, restart both your phone and your Chromecast. Unplug the Chromecast for 10 seconds, plug it back in, and wait for the light to stabilize. Then close and reopen the Google Home app. This clears temporary connection problems and usually solves the issue.

Factory Reset: When the App Method Does Not Work

If the Google Home app cannot reach your Chromecast, you can force a factory reset using the physical button on the device. Locate the small reset button on the back or bottom of your Chromecast—it is usually recessed so you need a paperclip or similar tool to press it. While the device is plugged in, hold the reset button for 10 to 15 seconds until the light blinks or changes color, then release it.

The Chromecast will restart and return to factory settings. This erases all saved networks and settings. Once it finishes restarting (usually within two minutes), open the Google Home app, tap the plus icon to add a device, and follow the setup wizard. You will be prompted to choose a WiFi network and enter the password, just as if the Chromecast were brand new.

Factory reset is a last resort because it wipes everything, but it works when the app method fails. You will need to set up the device again from scratch, including naming it and assigning it to a room in the Google Home app.

Changing WiFi on Older Chromecast Models

Older Chromecast models (first and second generation) use the same Google Home app method, but the settings menu may look slightly different. The steps are identical: open the app, find your device, tap settings, and look for WiFi or Network options. If you have an older model and the app does not show a WiFi option, try the factory reset button instead.

Some very old Chromecast devices may require the older Google Cast app instead of Google Home. If you cannot find your device in Google Home, check whether you have the Cast app installed and try there. Google has largely phased out the Cast app in favor of Google Home, so updating to the latest version of Google Home is usually the better choice.

Troubleshooting Common Problems

The Chromecast connects but then drops the new network. This usually means the WiFi password was entered incorrectly, or the network signal is too weak. Go back into the app, forget the network, and try again, making sure you type the password exactly as it appears (passwords are case-sensitive). If the signal is weak, move your Chromecast closer to the router or consider using a WiFi extender.

The app says the network password is wrong, but you know it is correct. Some routers use special characters or spaces in their passwords that can cause problems. Try resetting your router's WiFi password to something simpler (letters and numbers only, no symbols), then connect the Chromecast to that new password. Once it connects, you can change the router password back if you want.

The Chromecast connects to WiFi but will not play content. This usually means the device is connected to the network but cannot reach the internet. Check that your router is connected to your internet service provider and that other devices can browse the web. Restart your router by unplugging it for 10 seconds, then plug it back in and wait for it to fully restart before trying again.

Frequently Asked Questions

Do I need to be on the same WiFi network to change my Chromecast's settings?

Yes, your phone must be on the same WiFi network as your Chromecast for the Google Home app to find and control it. If your Chromecast is already offline, you will need to use the factory reset button instead.

Will changing the WiFi network erase my saved apps or preferences?

No. Changing the WiFi network only disconnects and reconnects to a different network. Your apps, preferences, and linked accounts stay the same. Only a factory reset erases everything.

Can I change my Chromecast's WiFi from a different room or building?

No. The Google Home app must be able to communicate directly with your Chromecast, which requires being on the same local network. You cannot change it remotely from outside your home or from a different WiFi network.

What if I forgot my new WiFi password?

If you cannot remember the password for the network you want to connect to, log into your router's settings page from a computer or phone to reset it. Most routers have a label on the back with the default login information. Once you reset the password, use the new one when connecting your Chromecast.

How long does it take for the Chromecast to connect to a new WiFi network?

Usually 30 seconds to two minutes. If it takes longer than five minutes, the password is likely wrong or the signal is too weak. Try forgetting the network and reconnecting with the correct password.