The fastest way to reconnect Chromecast to WiFi

Open the Google Home app on your phone, tap the device you want to reconnect, then tap Settings (the gear icon in the top right). Select Wi-Fi, choose Forget, and the Chromecast will reset its connection. You'll then see a prompt to select your new network and enter the password. The whole process takes about two minutes.

If you're switching networks in the same home — say, moving from a 2.4 GHz band to a 5 GHz band, or connecting to a guest network — this method works without unplugging the device. Chromecast stays powered on the whole time.

If the Google Home app doesn't show your Chromecast, or if you've forgotten which network it's on, you'll need to factory reset it instead. That's covered in the section below.

Key Takeaways

  • The Google Home app is the standard way to change WiFi networks without touching the Chromecast itself.
  • If the app can't find your Chromecast, a factory reset using the physical button on the device is necessary.
  • Chromecast works on 2.4 GHz and 5 GHz networks, but not on 6 GHz WiFi 6E networks.
  • After reconnecting, your casting apps (YouTube, Netflix, Spotify) will work when ready without re-downloading.
  • If your router requires a separate login page or captive portal, Chromecast cannot connect to that network.

Using the Google Home app to switch networks

Make sure your phone is on the same WiFi network as your Chromecast before you start. Open the Google Home app, find your Chromecast in the device list, and tap it. Tap the Settings gear icon in the top right corner of the screen.

Scroll down and tap Wi-Fi. You'll see the network your Chromecast is currently connected to. Tap Forget to disconnect from that network. The Chromecast will briefly lose power to its WiFi radio, then display a list of available networks.

Select your new network from the list. If it's a hidden network, tap Add network and type the name manually. Enter the WiFi password and tap Connect. Wait 30 to 60 seconds for the connection to establish. The Google Home app will confirm when the Chromecast is back online.

Factory reset when the app can't find your device

If your Chromecast doesn't appear in the Google Home app, or if you can't remember which network it's connected to, you'll need to perform a factory reset. Locate the small reset button on the back or bottom of your Chromecast device — it's recessed so you'll need a straightened paperclip or a ballpoint pen to press it.

With the Chromecast plugged in, hold the reset button for 10 to 15 seconds. The LED light on the device will turn orange, then white. Release the button and wait for the light to blink white — this means the Chromecast is in setup mode and ready to connect to a network.

Open the Google Home app and tap the + button to add a new device. Select Set up device, then New device. Choose your country and select the Chromecast from the list of nearby devices. Follow the on-screen prompts to select your WiFi network and enter the password. The setup will take about three to five minutes.

Troubleshooting connection problems

If your Chromecast connects but then drops the WiFi connection repeatedly, move it closer to your router. Chromecast has a shorter range than most phones and laptops, especially on 5 GHz networks. Walls, metal objects, and microwaves can interfere with the signal.

If your router uses a captive portal — a login page that appears when you first connect — Chromecast cannot use that network. This is common on hotel WiFi, airport networks, and some corporate systems. You'll need a network without a login page, such as a home router or a guest network that doesn't require authentication.

If the password is correct but the Chromecast won't connect, restart your router by unplugging it for 30 seconds, then plugging it back in. Wait for the router to fully boot before trying to connect the Chromecast again. If the problem persists, try connecting to a different WiFi band — if your router broadcasts both 2.4 GHz and 5 GHz, create a separate network name for each and connect the Chromecast to the 2.4 GHz band first.

What happens to your apps and settings after reconnecting

Your casting apps — YouTube, Netflix, Spotify, and others — remain signed in and ready to use when ready after you reconnect to a new network. You don't need to re-read them or sign in again. The Chromecast stores your app data locally, not on the WiFi connection.

Your Google Home automations and routines stay active as long as your Chromecast is connected to the same Google account. If you factory reset the device, you'll need to add it back to your home in the Google Home app, but your other smart home devices won't be affected.

WiFi networks that Chromecast does not support

Chromecast works on standard 2.4 GHz and 5 GHz WiFi networks. It does not work on WiFi 6E networks that broadcast on the 6 GHz band. If your router is a newer WiFi 6E model, disable the 6 GHz band or create a separate 2.4 GHz or 5 GHz network for your Chromecast.

Enterprise networks that require a username and password (WPA2-Enterprise or WPA3-Enterprise) are not supported. If your workplace or school network uses this setup, you won't be able to connect a Chromecast to it. Personal networks with a straightforward password (WPA2-Personal or WPA3-Personal) work fine.

Networks that hide their name (SSID broadcast disabled) can be connected to, but you'll need to manually type the network name into the setup screen. The Chromecast won't see it in the available networks list.

Frequently Asked Questions

Do I need to unplug my Chromecast to change WiFi networks?

No. Using the Google Home app, you can switch networks without unplugging the device. A factory reset does require the Chromecast to stay plugged in, but you're not disconnecting the power — you're just holding the reset button.

Will my casting history and preferences be erased if I change WiFi?

No. Changing WiFi networks does not erase any data on the Chromecast. Your apps, sign-ins, and viewing history remain intact. A factory reset will erase everything, but a straightforward network change will not.

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

Yes. Chromecast works on both 2.4 GHz and 5 GHz networks. If your router broadcasts both bands with the same network name, the Chromecast will usually pick 2.4 GHz automatically. If you want to use 5 GHz, create a separate network name for that band and connect to it manually.

What if I don't have the Google Home app?

You need the Google Home app to change WiFi networks on Chromecast. It's free and available on iOS and Android. If you've lost access to your phone, you can factory reset the Chromecast using the physical button and set it up again from a different device.

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

After you enter the WiFi password, the connection usually establishes in 30 to 60 seconds. If it takes longer than two minutes, the password may be incorrect or the network may be temporarily unavailable. Try entering the password again or restarting your router.