The fastest way to reconnect Chromecast to a new network

To connect your Chromecast to a new WiFi network, you need to put it back into setup mode, then use the Google Home app on your phone to walk it through the connection. The whole process takes about five minutes if your phone and Chromecast are in the same room. You do not need to factory reset the device or unplug it for hours — a few taps in the app will do it.

The reason you need the app is that Chromecast creates its own temporary network during setup, and your phone has to join that network to tell the device your WiFi password. Once the Chromecast connects to your home network, it forgets that temporary network and works normally.

Key Takeaways

  • Open the Google Home app on your phone, tap the Chromecast device, then tap the settings gear icon and choose "Forget network" to start over.
  • The Chromecast will restart and broadcast its own setup network — your phone will see a notification to join it, or you can join manually in WiFi settings.
  • Once your phone is on the Chromecast's network, the Google Home app will guide you through selecting your home WiFi and entering the password.
  • If your Chromecast does not appear in the app after setup, restart both your phone and the Chromecast by unplugging it for 30 seconds.

Step-by-step: using the Google Home app to reconnect

Start by opening the Google Home app on your phone — the same app you used to set up the Chromecast the first time. Tap the Chromecast device you want to reconnect. At the top right, you will see a settings gear icon; tap it.

Look for an option that says "Forget network" or "Wi-Fi settings." Tap it. The app will ask you to confirm that you want to forget the current network — say yes. Your Chromecast will restart, and the light on the device will turn orange or white, which means it is in setup mode and broadcasting its own temporary network.

Your phone will either show a notification suggesting you join the Chromecast's setup network, or you can go to your phone's WiFi settings and look for a network name that starts with "Chromecast" or "GoogleCast" followed by numbers. Join that network — it does not require a password.

Once your phone is on the Chromecast's network, open the Google Home app again. It should detect the device and walk you through selecting your home WiFi network from a list. Choose your network, enter your WiFi password, and tap connect. The Chromecast will join your home network and restart — this takes about 30 seconds.

What to do if the Google Home app does not find your Chromecast

If the app does not show your Chromecast during setup, the most common reason is that your phone is not actually connected to the Chromecast's temporary network. Go back to your phone's WiFi settings and confirm you are joined to the network that starts with "Chromecast" or "GoogleCast." If you do not see it, wait 10 seconds — the device takes a moment to broadcast after restarting.

If you see the network but cannot join it, or if the app still does not find the device, unplug the Chromecast from power for 30 seconds, then plug it back in. Wait another 30 seconds for it to restart and broadcast its setup network. Then try joining again from your phone's WiFi settings and opening the Google Home app.

If the Chromecast is still not showing up after a restart, check that your phone and the Chromecast are in the same room and within about 15 feet of each other. Walls and distance can make the temporary setup network harder to reach. Move closer and try again.

Why your Chromecast might not connect to the new network

The most common reason a Chromecast fails to connect to your new WiFi is an incorrect password. If you enter the password and the device shows an error or keeps asking you to try again, double-check that you have the right password by connecting another device to the same network. Passwords are case-sensitive, so make sure caps lock is not on when you type.

If the password is correct but the Chromecast still will not connect, the problem might be your WiFi settings. Some networks use a feature called "band steering" that automatically switches devices between 2.4 GHz and 5 GHz bands. Chromecast works better on 2.4 GHz, especially during setup. If your router has a separate 2.4 GHz network name, try connecting to that instead of the main network.

Another less common issue is that your router is blocking the Chromecast's connection. This happens when a router has a security setting that prevents unknown devices from joining. Check your router's admin panel (usually at 192.168.1.1 in a web browser) and look for a setting called "MAC filtering" or "device blocking." If it is turned on, you may need to add the Chromecast's MAC address to an allow list, or temporarily turn off the setting while you connect.

Reconnecting without the Google Home app

If you do not have the Google Home app installed or do not want to use it, you can still reconnect your Chromecast using a computer or tablet instead. The process is the same — you join the Chromecast's temporary setup network from your computer's WiFi settings, then open a web browser and go to 192.168.86.1. This will open the Chromecast setup page in your browser, where you can select your home network and enter your password.

The web-based setup is slower than the app and does not work on all networks, so the Google Home app is the recommended route. But if you are away from your phone or prefer using a computer, the browser method will work.

What happens to your Chromecast settings when you change networks

When you reconnect your Chromecast to a new WiFi network, the device keeps all of its other settings — the name you gave it, which room it is in, and any automations or routines you set up. You are only changing which network it connects to, not resetting the device.

The one thing that might change is the device's IP address on your home network. If you have set up port forwarding or other network rules based on the old IP address, you may need to update those. Most people do not need to worry about this, but if you use your Chromecast for anything beyond casting from your phone, check your router settings after reconnecting.

Frequently Asked Questions

Do I need to unplug my Chromecast to reconnect it to a new network?

No. You only need to unplug it if the setup process gets stuck or the device stops responding. For a normal reconnection, just use the "Forget network" option in the Google Home app — the device will restart on its own.

Can I reconnect my Chromecast if I forgot my WiFi password?

You will need the password to complete the setup. If you do not remember it, you can reset your WiFi password through your router's admin panel or by calling your internet provider. Once you have the new password, you can reconnect the Chromecast.

What if my Chromecast connects but then disconnects from WiFi?

This usually means the device is too far from the router or there is interference from other devices. Try moving the Chromecast closer to the router, or move the router away from microwaves and cordless phones. If the problem continues, restart both the Chromecast and your router by unplugging them for 30 seconds.

Can I connect my Chromecast to a 5 GHz network instead of 2.4 GHz?

Yes, but 2.4 GHz is more reliable for Chromecast, especially during setup. If your router broadcasts both bands under the same network name, the Chromecast may struggle. Try connecting to the 2.4 GHz band specifically, or ask your router to broadcast them separately so you can choose.

Will reconnecting to a new network erase my casting history or saved apps?

No. Reconnecting only changes which WiFi network the device uses. Your casting history, saved apps, and all other settings stay the same.