Google’s Chromecast device has been designed to remember only one Wi-Fi network at a time, which prevents it from connecting to another Wi-Fi Network. Hence, the only way to change Wi-Fi network on a Chromecast device is by removing its previous Wi-Fi network information.
This can be done by using Google Home App, using Remote Control, using the Reset button on the Chromecast device and also by unplugging the Chromecast device from its power source for a short period of time.
Switch or Change Wi-Fi Network on Chromecast
If you are using a newer model of Chromecast, it comes with a Remote Control; which can be used to erase the previous Wi-Fi network information, right on the screen of your Home TV.
Once the previous Wi-Fi Network information is removed from the Chromecast device, it becomes available for setup and connection to your new Wi-Fi network.
If you are using Chromecast Ultra, Chromecast (3rd gen and older), you can make use of Google Home App, physical Reset button and unplugging method to remove the previous Wi-Fi network information.
In all cases, you still need to make use of Google Home App to complete the setup process and connect the Chromecast device to your New Wi-Fi network.
1. Change Chromecast Wi-Fi Network Using Google Home App
You can change the Wi-Fi network on both new and older models of Chromecast device by using Google Home App.
1. Download and Install the Google Home App on your iPhone or Android Phone.
2. Open Google Home App > switch to Devices section and tap on the Name of your Chromecast device.
3. On the Devices screen, tap on the Gear Icon (to open Settings).
4. From Settings go to Device Information > select your Wi-Fi Network and tap on Forget this Network option.
5. Once the process is completed, you should be back on the Home Screen of Google Home App.
The next step is to Setup Chromecast Device and connect it to your New Wi-Fi network by using steps as provided in this guide: How to Setup Chromecast Using Google Home App
2. Change Chromecast Wi-Fi Network Using Remote
If you are using Chromecast with Google TV or Chromecast with Google TV (HD), you can make use of User Interface on the TV screen to change its Wi-Fi network.
1. On the screen of your TV, go to top-right corner and select the Settings menu.
2. From the Settings screen, go to Wi-Fi Network > Network Name and select Forget Wi-Fi Network option.
3. Once the old network is removed, follow the steps to Setup Chromecast device and connect it to your New Wi-Fi Network by using information provided in the above Link (See link provided in the first method).
3. Change Chromecast Wi-Fi Network Using Reset Process
If you have changed your service provider, switched to new modem/router unit or moved to a new place, you will be required to Reset the Chromecast device.
This will remove the previous Wi-Fi Network information from Chromecast, which allows it to complete the setup process and connect to your New Wi-Fi Network.
1. Reset Chromecast Device by using steps as provided in this guide: How to Reset Google Chromecast Device.
2. After the Reset process is completed, you can complete the Setup process and connect the Chromecast device to your New Wi-Fi Network by using steps as provided in the Link (See link provided in the first method).