The fastest way to change Chromecast WiFi

To change the WiFi network your Chromecast uses, open the Google Home app on your phone, tap the device, go to Settings, select WiFi, and choose a new network from the list. The process takes about two minutes and does not require you to unplug the device or restart anything.

You will need the Google Home app installed on an Android or iOS phone that is already connected to the same WiFi network as your Chromecast. If your Chromecast is not currently connected to any network, you can set it up as a new device instead, which follows the same steps.

Key Takeaways

  • The Google Home app is the only tool you need — there is no web interface or separate setup page for Chromecast.
  • Your phone must be on the same WiFi network as the Chromecast before you can change its settings.
  • After you select a new network, the Chromecast will disconnect from the old one and reconnect within 30 seconds.
  • If your Chromecast loses power or you forget which network it is on, you can set it up again from scratch using the same app.

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

Open the Google Home app and make sure your phone is connected to the WiFi network your Chromecast currently uses. Tap the Chromecast device in the app — it will show the device name and a small icon. If you do not see it listed, swipe down to refresh.

Tap the Settings icon (a gear) in the top right corner of the device card. Scroll down and tap WiFi. The app will show the network the Chromecast is currently using and a list of available networks below it. Select the new network you want to use.

If the new network requires a password, you will be asked to enter it. Type the password exactly as it is — capitalization and special characters matter. Tap Connect. The Chromecast will disconnect from the old network and attempt to join the new one. This usually takes 15 to 30 seconds.

What to do if the Chromecast will not connect to the new network

If the Chromecast fails to connect, the app will show an error message. The most common causes are an incorrect password, a network that does not broadcast its name, or a 5 GHz network when the Chromecast only supports 2.4 GHz. Check that you typed the password correctly and try again.

If the password is right but the connection still fails, try switching to the 2.4 GHz band of your router if you have a dual-band network. Most Chromecast models work on 2.4 GHz only, though newer models support both bands. If you are unsure which band your network uses, check your router's settings or contact your internet provider.

If the Chromecast still will not connect after trying a different band, restart the device by unplugging it for 10 seconds, then plugging it back in. Once it powers on, return to the Google Home app and try the WiFi change again.

Changing WiFi when your phone is on a different network

If your phone is already on the new network but the Chromecast is still on the old one, you cannot change the settings directly from the Google Home app — your phone and the device must be on the same network to communicate. In this case, temporarily connect your phone back to the old network, make the change, and then switch your phone back.

Alternatively, you can set up the Chromecast as a new device. Open Google Home, tap the plus icon to add a device, select Set up device, and follow the prompts. During setup, you will be asked which network to use. This method works even if you do not remember the old network name.

Resetting the Chromecast if you cannot access it

If you have forgotten the network password or cannot connect your phone to the old network, you can reset the Chromecast to factory settings. Locate the reset button on the device — it is usually a small hole on the back or bottom. Use a straightened paperclip or a similar thin object to press and hold the button for about 15 seconds until the light on the device flashes.

Once the reset is complete, the Chromecast will restart and appear as an unconfigured device in the Google Home app. You can then set it up again and choose a new network during the setup process. This erases any saved networks and settings, so you will need to reconnect it to your WiFi and any casting services you use.

Understanding Chromecast WiFi compatibility

Most Chromecast models support 2.4 GHz WiFi networks only, which means they will not appear in a list of 5 GHz networks. If your router broadcasts both bands under the same name, the Chromecast will automatically connect to the 2.4 GHz version. If your router only broadcasts 5 GHz, the Chromecast will not be able to connect.

Chromecast with Google TV (the newer model with a remote) supports both 2.4 GHz and 5 GHz, so it will work on either band. Check your device's specifications or the box it came in if you are unsure which model you have. Your router's manual or settings page will tell you which bands it broadcasts.

What happens to your casting apps and accounts

Changing the WiFi network does not affect any of the apps or accounts linked to your Chromecast. Services like Netflix, YouTube, Spotify, and Google Photos will remain signed in and ready to use once the device reconnects to the new network. You do not need to log in again or reconfigure anything.

The only thing that changes is the network connection itself. Your casting history, saved shows, and any custom device names you have set will all stay the same.

Frequently Asked Questions

Can I change the WiFi network without the Google Home app?

No. The Google Home app is the only way to change Chromecast WiFi settings. There is no web interface, no button on the device itself, and no alternative method. You must have the app installed on a phone or tablet.

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

No. The Chromecast will switch networks without being unplugged. It will disconnect from the old network and reconnect to the new one within 30 seconds. You only need to unplug it if the connection fails and you want to restart the device.

What if I do not know the password for the new network?

You will not be able to connect the Chromecast without the correct password. If you do not know it, check your router's settings page (usually accessible from a computer or phone already on that network) or contact your internet provider. Some routers have the password printed on a sticker on the device itself.

Will changing the network affect other devices in my home?

No. Changing the Chromecast's network does not affect any other device. Your phone, computer, smart speakers, or other gadgets will continue to work normally on whatever network they are connected to.

Can I use a guest network for my Chromecast?

Yes, if your router has a guest network, the Chromecast can connect to it just like any other network. However, some guest networks are set up to block device-to-device communication, which means your phone may not be able to cast to the Chromecast even though both are on the same network. Check your router's guest network settings if casting stops working.