Start off by plugging your Chromecast into your television and ensuring that all of the cables are secured properly. You will need a smartphone or tablet to set up your device, so make sure that you have this handy as well.

Bear in mind that your smartphone or tablet should be connected to the same Wi-Fi that you want the Chromecast to be connected to, so don’t leave it on Mobile Data. Connect it to the Wi-Fi and then download the Google Home app.

Once it has finished downloading, open the app on your smartphone or tablet. The Chromecast should automatically find your app and prompt it to begin the installation of it automatically.

Follow its instructions until you get to the Wi-Fi connection page.

Simply find the Wi-Fi that you are connected to on the list of nearby networks and input your passcode. Wait a few seconds for it to be connected and you’re done! Enjoy your Chromecast.

If you did not get the prompts, however, you can set up your Chromecast manually through the app. To do this, simply open the app and find the Add Device button in the top left-hand side of the home screen.

Press Setup Device and then Set Up New Devices. Now you’ll have to find your Chromecast, so don’t try and set it up too far away from the dongle.

Now you should be receiving prompts on setting up your Google Chromecast. Follow these until you get to the Wi-Fi section. Choose the network you want to connect to and use your passcode to connect. It’s as simple as that!

To change the Wi-Fi network on your Chromecast you will first need to forget the Wi-Fi connection it is already set up to. To do this, turn on your television with the Chromecast connected and make sure that your phone is connected to Wi-Fi. 

Open the Google Home app and choose the Chromecast device that you want to change the Wi-Fi for. Bear in mind that if you have multiple Google Chromecast devices you will need to change the Wi-Fi for them all separately.

Click the Settings button in the top right corner, which looks like a cog, and then press Wi-Fi. Click Forget Network to remove the Wi-Fi from this Chromecast.

Now you have to connect the Chromecast to your new Wi-Fi. It’s worth noting that if your phone is already on the new Wi-Fi, it might not pick up the Chromecast because of conflicting networks.

Try and set up your Chromecast like we outlined in the above section. This might not work though, and you may need to reset the device.

Resetting your device is very easy. All you need to do is press and hold the reset button on the Chromecast. This can be found next to the microUSB port on the device. Hold the button for 15 seconds before letting it go.

When holding the button, a light will flash. Only let the button go when this light has stopped flashing.

Bear in mind that resetting your Chromecast will remove all of its settings, including the Wi-Fi network settings. Now that it has successfully reset itself, you can follow the steps in the first section to connect your Chromecast to your Wi-Fi.