The fastest way to switch Chromecast to a different WiFi network

To change your Chromecast's WiFi connection, you need to forget the old network and reconnect it to the new one using the Google Home app on your phone or tablet. The process takes about five minutes and works the same way whether you're switching to a different router, moving to a new home, or changing your network name or password.

You cannot change the WiFi directly on the Chromecast device itself — it has no screen or buttons for that. The Google Home app is the only way to do it. If you no longer have access to the phone or tablet you originally set up the Chromecast with, you can still change the network, but you'll need to reset the device first.

Key Takeaways

  • Open the Google Home app, select your Chromecast, tap the settings gear icon, and choose "Forget network" to disconnect from the old WiFi.
  • After forgetting the network, the Chromecast will enter pairing mode and appear in the Google Home app as an available device to set up again.
  • Select the Chromecast in pairing mode, choose your new WiFi network from the list, enter the password, and wait for the connection to complete.
  • If you don't have the original setup phone or tablet, you can factory reset the Chromecast by holding the reset button for 10 seconds, then set it up fresh with the new network.

Step-by-step: changing the network in Google Home

Open the Google Home app on the phone or tablet you used to set up the Chromecast. Tap the device icon in the top right corner to see all your devices, then find and tap your Chromecast in the list.

In the device details screen, tap the settings gear icon in the top right. Scroll down and tap "Forget network." The app will ask you to confirm — tap "Forget" again. Your Chromecast will now disconnect from the old WiFi and enter pairing mode, which means it's ready to connect to a new network.

The Chromecast will appear in the Google Home app as an available device to set up. Tap it and follow the on-screen prompts. You'll see a list of WiFi networks in range — select your new network and enter the password. The Chromecast will connect and you'll see a confirmation message once it's done.

What to do if you don't have the original setup device

If the phone or tablet you originally set up the Chromecast with is no longer available, you cannot use the "Forget network" method. Instead, you'll need to factory reset the device so you can set it up fresh on the new network.

Locate the small reset button on the back or bottom of your Chromecast (the exact location varies by model). Use a straightened paperclip or a similar thin object to press and hold the reset button for about 10 seconds. The LED light on the device will flash orange, then turn white — this means the reset is complete.

Once reset, the Chromecast will appear in the Google Home app as a new device ready to set up. Open Google Home, tap the plus icon to add a device, select "Set up device," choose "New device," and follow the prompts to connect it to your new WiFi network.

Troubleshooting when the Chromecast won't connect

If the Chromecast connects to the new network but then disconnects, the most common cause is that the password you entered was wrong. Go back into Google Home, tap the Chromecast, tap settings, and tap "Forget network" again. Then reconnect and re-enter the password carefully — passwords are case-sensitive.

If the Chromecast doesn't appear in the available networks list at all after you forget the network, restart the device. Unplug it from power for 30 seconds, then plug it back in. Wait about two minutes for it to boot up and enter pairing mode again.

If your Chromecast connects to the new network but you can't cast to it from your phone, make sure both your phone and the Chromecast are on the same WiFi network. Some routers have separate 2.4 GHz and 5 GHz bands — Chromecast devices work on both, but your phone must be on whichever band the Chromecast is using.

When to reset instead of forgetting the network

Use the "Forget network" method if you still have access to the phone or tablet that set up the Chromecast. It's faster and you won't lose any of your casting preferences or linked accounts.

Use the factory reset method if you've lost access to the original setup device, if you're giving the Chromecast to someone else, or if the device is stuck and won't respond to the app. A factory reset erases all settings and returns the Chromecast to its original state, so you'll need to set it up from scratch.

Changing the network on different Chromecast models

The steps above work for all Chromecast models, including Chromecast with Google TV, Chromecast Audio, and older Chromecast dongles. The Google Home app is the same across all models, and the "Forget network" option is in the same place.

If you have a Chromecast built into a TV (sometimes called Chromecast built-in), the process is identical — you still use the Google Home app to change the network. The TV's own remote and settings menu do not control the Chromecast network connection.

Frequently Asked Questions

Do I need to unplug the Chromecast before changing the WiFi?

No. The Chromecast stays plugged in the whole time. When you tap "Forget network" in the Google Home app, it disconnects from the old WiFi while still powered on. You only unplug it if you're doing a factory reset.

Will changing the WiFi erase my apps or settings?

No. Forgetting the network and reconnecting to a new one does not erase any apps, accounts, or preferences. If you factory reset the device, it will erase everything and you'll need to set it up as if it were new.

Can I change the Chromecast to a 5 GHz network instead of 2.4 GHz?

Yes. Chromecast devices work on both 2.4 GHz and 5 GHz bands. When you reconnect in the Google Home app, you'll see both bands listed separately if your router broadcasts them. Choose whichever one you prefer — just make sure your phone is on the same band if you want to cast to it.

What if the Chromecast keeps disconnecting from the new network?

First, restart the Chromecast by unplugging it for 30 seconds. If it still disconnects, the router may be too far away or there may be interference. Try moving the Chromecast closer to the router, or check if your router's channel is crowded by using a WiFi analyzer app on your phone.

Can I change the WiFi from a different phone than the one that set it up?

No. Only the phone or tablet that originally set up the Chromecast can use the "Forget network" option in Google Home. If you want to use a different device, you'll need to factory reset the Chromecast first.