Change Your WiFi Network 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 (gear symbol), then select "WiFi" and choose your new network from the available list. Enter the password for that network, and your Chromecast will disconnect from the old network and connect to the new one within 30 seconds to 2 minutes.

This method works whether you're switching to a different router, moving to a new home, or changing from a 2.4 GHz band to a 5 GHz band on the same router. You do not need to unplug the device or reset it—just follow the steps in the app and you're done.

Key Takeaways

  • Open the Google Home app, tap your Chromecast device, select the settings gear icon, then tap "WiFi" to see available networks.
  • Your Chromecast will stay connected to the old network until you complete the new network setup, so you can finish the process without losing the device.
  • If the Google Home app cannot find your Chromecast, make sure your phone is on the same WiFi network the device is currently using.
  • Forgetting the old network on your Chromecast prevents it from automatically reconnecting to that WiFi if you move back into range.

What to Do If the Google Home App Won't Find Your Device

Sometimes the Google Home app cannot locate your Chromecast because your phone is on a different WiFi network than the device. Make sure your phone is connected to the same network your Chromecast is currently using, then open the Google Home app and try again. If you see your Chromecast listed but tapping it does nothing, close the app completely and reopen it after 10 seconds.

If your Chromecast is offline or not responding in the app, unplug it from power for 30 seconds, plug it back in, and wait for the LED light to stop blinking. Then open the Google Home app again. If it still will not appear, you may need to reset the device and set it up from the beginning.

Reset Your Chromecast When You Cannot Connect

If changing the WiFi network through the app is not working, you can reset your Chromecast to factory settings. Unplug the device, then plug it back in and wait for the LED to turn solid white. While it is powered on, press and hold the reset button (a small indented button on the device itself, or on the power cable if you have an older model) for 10 to 15 seconds until the LED starts blinking orange.

Once the LED blinks orange, the device is resetting. This takes about 2 to 3 minutes. When it finishes, the LED will turn white again and the Chromecast will be ready to set up as new. You will need to go through the initial setup process in the Google Home app, which includes selecting your WiFi network and signing into your Google account.

Forget the Old Network to Prevent Auto-Reconnection

After your Chromecast connects to the new WiFi network, you may want to remove the old network from its memory. This prevents the device from automatically switching back to the old network if you move into range of it later. Open the Google Home app, tap your Chromecast, go to Settings, select "WiFi", and look for the option to "Forget" or "Remove" the old network from the list.

Not all Chromecast models show a forget option in the app. If you do not see one, you can skip this step—the device will straightforward stay connected to whichever network you set it to most recently. Forgetting old networks is mainly useful if you travel between locations or if you have multiple routers in your home.

Switching Between 2.4 GHz and 5 GHz Bands

Some routers broadcast two separate WiFi bands: 2.4 GHz (slower but longer range) and 5 GHz (faster but shorter range). Your Chromecast can connect to either one, but it cannot use both at the same time. If your router shows two separate network names—for example, "MyNetwork" and "MyNetwork-5G"—you can choose which band to use by selecting the appropriate network in the Google Home app.

The 5 GHz band is usually faster and has less interference from other devices, so it is a good choice if your Chromecast is close to your router. The 2.4 GHz band works better if your Chromecast is far from the router or if walls and obstacles are in the way. You can switch between them anytime by opening the Google Home app and selecting a different network.

Troubleshoot Connection Problems After Changing Networks

If your Chromecast connects to the new network but then keeps disconnecting, the problem is usually weak signal or interference. Move your router closer to the Chromecast, or move the Chromecast closer to the router. If that is not possible, try switching to the 2.4 GHz band, which travels through walls better than 5 GHz.

Another common issue is that the Chromecast connects but will not load video or respond to commands. This usually means the WiFi password was entered incorrectly. Open the Google Home app, go back to the WiFi settings for your Chromecast, and re-enter the password carefully. Make sure Caps Lock is off unless your password actually contains capital letters.

Frequently Asked Questions

Do I need to unplug my Chromecast to change the WiFi network?

No. You can change the WiFi network through the Google Home app without unplugging the device. It will stay connected to the old network until the new connection is complete, so there is no downtime. Only unplug it if the device is not responding or if you need to reset it.

What if I forgot my WiFi password?

You will need to recover or reset your router's password before you can connect your Chromecast to it. Log into your router's admin panel (usually through a web browser or the router's app) using your router's login credentials. If you do not have those, check the router's manual or contact your internet provider for help resetting it.

Can I connect my Chromecast to a guest WiFi network?

Yes, your Chromecast can connect to a guest network just like any other WiFi network. Enter the guest network's name and password in the Google Home app the same way you would for your main network. Some guest networks have restrictions that may prevent casting, so test it after connecting.

Will changing the WiFi network erase my Chromecast settings?

No. Changing the WiFi network does not erase your Google account sign-in, saved preferences, or any other settings on the device. Only a factory reset will erase those settings. Switching networks is a straightforward connection change with no data loss.

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

Most Chromecast devices connect to a new WiFi network within 30 seconds to 2 minutes. If it takes longer than 5 minutes, the password may be incorrect or the device may have lost connection. Check the Google Home app to see the connection status, and try re-entering the password if needed.