Change Your WiFi Network Through 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 gear icon, then select "WiFi" and choose "Forget Network." Your Chromecast will disconnect from the current network. When you return to the app, it will prompt you to connect to a new WiFi network — select your new network name and enter the password.

This method works whether you're switching to a different router, moving to a new home, or changing your network password. The entire process takes about two minutes. Make sure your phone is connected to the same WiFi network as your Chromecast before you start, or the app won't be able to find the device.

Key Takeaways

  • Use the Google Home app to disconnect your Chromecast from its current network by tapping the device settings and selecting "Forget Network."
  • After forgetting the network, the app will automatically prompt you to connect to a new WiFi network with a password.
  • Your phone must be on the same WiFi network as your Chromecast for the app to locate and communicate with the device.
  • If the Google Home app doesn't find your Chromecast, you can reset it using the physical button and set it up as a new device.
  • Changing networks does not erase your Chromecast settings — your saved apps and preferences remain intact.

What Happens When You Forget the Network

When you tap "Forget Network" in the Google Home app, your Chromecast erases the stored WiFi password and disconnects when ready. The device will no longer try to join that network on its own. This is different from straightforward disconnecting — forgetting removes the network from the device's memory entirely.

After you forget the network, your Chromecast enters a pairing mode for about 15 minutes. During this window, the Google Home app will show a prompt to connect to a new network. If you don't complete the setup within that time, you'll need to forget the network again and start over. The device won't reconnect to any network automatically.

Entering Your New WiFi Password Correctly

When the Google Home app asks you to select a new network, you'll see a list of available WiFi networks in your area. Tap the one you want to connect to. The app will then ask for the password — this is case-sensitive, so uppercase and lowercase letters matter. If you enter it wrong, the Chromecast will fail to connect and you'll see an error message.

Common mistakes include typing a space at the beginning or end of the password by accident, or confusing a zero (0) with the letter O. If you're not sure whether your password is correct, check your router's label or log into your router's settings page on a computer. After you enter the password, the app will take 30 to 60 seconds to connect your Chromecast to the new network.

Reconnecting to a Network You've Used Before

If you're switching back to a WiFi network your Chromecast has connected to in the past, you don't need to enter the password again. The device will remember it. straightforward tap "Forget Network" on your current connection, and when the app shows the list of available networks, select the old one. Your Chromecast will reconnect automatically using the stored password.

This is useful if you have a guest network and your main network, or if you're moving between two locations with different routers. The Chromecast can store passwords for multiple networks, though it can only be connected to one at a time.

Troubleshooting When the App Can't Find Your Device

If the Google Home app doesn't show your Chromecast after you forget the network, the device may have exited pairing mode. Wait a few seconds and refresh the app by pulling down on the device list. If it still doesn't appear, your phone and Chromecast may be on different networks — make sure your phone is connected to the same WiFi you're trying to set up.

If refreshing doesn't work, you can perform a factory reset. Locate the small reset button on the back or bottom of your Chromecast (you may need a paperclip to press it). Hold it for 15 seconds until the light blinks. The device will restart and enter setup mode. Open the Google Home app and add it as a new device — you'll go through the full setup process, including selecting your WiFi network and entering the password.

What Information Your Chromecast Keeps After Changing Networks

Changing your WiFi network does not erase your Chromecast's settings or data. Your device name, any apps you've installed, and your Google account connection all remain the same. You won't lose access to your streaming services or have to sign back into anything.

The only thing that changes is the network connection itself. If you had customized your device name (for example, "Living Room TV" instead of "Chromecast"), that name stays. Your casting history and preferences are tied to your Google account, not to the network, so they follow you to any network your Chromecast connects to.

Frequently Asked Questions

Do I need to be on the same WiFi network as my Chromecast to change it?

Yes. Your phone must be connected to the same network as your Chromecast for the Google Home app to find and communicate with the device. If you're switching networks entirely, make sure your phone is still on the old network when you start the process, then you can switch your phone to the new network after the Chromecast connects.

What if I forgot my WiFi password?

Check the label on the back or bottom of your router — most routers have the default password printed there. If you've changed it and can't remember it, you can reset your router to factory settings by holding the reset button for 10 to 15 seconds. This will erase your network password and return it to the default, which is printed on the label.

Can I change my Chromecast's network without the Google Home app?

The Google Home app is the standard method, but if you can't use it, you can perform a factory reset and set up the device again from scratch. This will let you select a new network during the initial setup process, though you'll need to go through the full setup steps.

Will my Chromecast automatically reconnect if I change my WiFi password?

No. If you change the password on your existing network but keep the network name the same, your Chromecast will fail to connect. You'll need to forget the network and reconnect using the new password through the Google Home app.

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

After you enter the password in the Google Home app, the connection usually takes 30 to 60 seconds. The app will show a progress indicator. If it takes longer than two minutes, the password may be incorrect — try forgetting the network and entering it again.