The most common reasons Chromecast stops working

Chromecast fails most often because your phone or computer has lost connection to the same Wi-Fi network as the device, because the Chromecast itself has lost power or internet, or because the app you're trying to cast from isn't compatible with your Chromecast model. Less often, a software update on either end or a conflict with your router settings is the culprit. The good news: most of these are fixable in under five minutes without calling Google support.

Before you troubleshoot anything, check the physical basics. Look at the Chromecast device itself—if the LED light is off or not lit at all, it has no power. If the light is red or orange, it's powered but not connected to the internet. A white or blue light means it's working normally. If you see no light, unplug the device from the HDMI port and power adapter, wait 10 seconds, and plug it back in.

Key Takeaways

  • Check that your phone, computer, and Chromecast are all on the same Wi-Fi network—this is the single most common reason casting fails.
  • Restart your Chromecast by unplugging it for 10 seconds, then plug it back in and wait for the light to turn white or blue.
  • Make sure your casting app (YouTube, Netflix, Spotify, or others) is up to date, because older versions often cannot communicate with Chromecast.
  • If your router uses a 5 GHz network only, your Chromecast may not connect—most Chromecast models need a 2.4 GHz band.
  • Forgetting the Wi-Fi network on your Chromecast and reconnecting it from scratch solves most persistent connection problems.

Verify all devices are on the same Wi-Fi network

Chromecast only works when your phone, tablet, or computer and the Chromecast device are connected to the same Wi-Fi network. This is the most overlooked step. Open your phone's Wi-Fi settings and look at which network you're connected to. Then check your Chromecast: open the Google Home app on your phone, tap the Chromecast device, tap the settings gear icon, and look at the network name listed under "Wi-Fi."

If they don't match, connect your phone to the same network as the Chromecast. If your router broadcasts both a 2.4 GHz and 5 GHz network with the same name, your phone may have automatically chosen the 5 GHz band while your Chromecast is on 2.4 GHz. Most Chromecast models (including Chromecast with Google TV) support both bands, but some older models only work on 2.4 GHz. Check your router's admin panel or ask your internet provider which band each network uses, then manually select the 2.4 GHz network on your phone if needed.

Restart the Chromecast device

A restart clears temporary glitches that prevent the device from communicating with your phone or the internet. Unplug the Chromecast from the HDMI port and power adapter simultaneously. Wait 10 seconds—this matters, because the device needs time to fully power down. Plug the power adapter back in first, then plug the HDMI cable back into your TV. Wait another 30 seconds for the device to boot up. You should see the Google logo appear on your TV screen, followed by a white or blue LED light on the device itself.

If the light stays red or orange after a full restart, the device is powered but cannot reach the internet. Move on to the Wi-Fi troubleshooting steps below. If the light does not turn on at all, the power adapter may be faulty—try a different USB power adapter rated for at least 1.5 amps, or plug the existing adapter into a different outlet to rule out a dead wall socket.

Update the casting app on your phone or computer

Apps like YouTube, Netflix, Spotify, and Google Photos must be current to cast to Chromecast. Older versions of these apps often cannot communicate with the device, even if everything else is set up correctly. Open your phone's app store (Google Play Store on Android, App Store on iPhone) and search for the app you want to cast from. If an "Update" button appears instead of "Open," tap it and wait for the update to finish. Restart the app after updating.

If you're casting from a computer using Chrome browser, make sure Chrome itself is up to date. Click the three-dot menu in the top right corner, go to "Help," then "About Google Chrome." Chrome will automatically check for updates and install them if available. Restart Chrome after the update completes. Some older apps or browser versions straightforward do not support Chromecast, so if updating does not work, try casting from a different app or device.

Forget and reconnect to Wi-Fi from the Chromecast settings

If your Chromecast is powered on and the light is white or blue but you still cannot cast to it, the device may have a stale or corrupted connection to your Wi-Fi network. Open the Google Home app on your phone, tap the Chromecast device, tap the settings gear icon, and scroll down to "Wi-Fi." Tap "Forget" to remove the saved network. The Chromecast will disconnect from Wi-Fi when ready.

Now reconnect it as if it were new. The Chromecast will broadcast its own temporary Wi-Fi network (usually named "Chromecast Setup" or similar). On your phone, go to Wi-Fi settings and select that network. Return to the Google Home app, and it will prompt you to select your home Wi-Fi network and enter the password. Choose your network and complete the setup. This process usually takes two to three minutes. Once reconnected, try casting again.

Check your router settings and restart your internet

Some router configurations block Chromecast from working, even when the device appears to be connected to Wi-Fi. If your router has a "guest network" feature enabled, Chromecast may be on the guest network while your phone is on the main network—they cannot communicate across networks. Log into your router's admin panel (usually by typing your router's IP address into a browser; check your router's label for the address) and verify that Chromecast and your phone are on the same network, not separated by guest network settings.

Restart your router by unplugging it for 10 seconds, then plugging it back in. Wait two minutes for it to fully boot up. This clears temporary connection issues and often restores Chromecast functionality. If your internet provider has a separate modem, restart that as well by unplugging it for 10 seconds. Restart the modem first, wait for it to fully boot, then restart the router.

Factory reset the Chromecast if nothing else works

If you have worked through all the steps above and Chromecast still will not connect or cast, a factory reset may be necessary. This erases all settings and returns the device to its original state. On the Chromecast device itself, locate the small reset button (usually recessed, requiring a paperclip or similar tool to press). With the device powered on, press and hold the reset button for 10 to 15 seconds until the LED light flashes orange. Release the button and wait for the device to restart—this takes about one minute.

After the reset completes, the Chromecast will display its setup screen on your TV. Use the Google Home app to set it up again from scratch, connecting it to your Wi-Fi network and your Google account. If the device still does not work after a factory reset, the hardware itself may be faulty, and you may need to contact Google support or consider replacing the device.

Frequently Asked Questions

Why does my Chromecast keep disconnecting from Wi-Fi?

Chromecast disconnects when it loses signal to your router, when your router reboots, or when the device overheats. Move the Chromecast closer to your router if possible, or use a Wi-Fi extender to strengthen the signal. If disconnections happen at specific times of day, your router may be rebooting automatically—check your router's admin settings for scheduled restarts and disable them if found. may support the Chromecast has airflow around it and is not covered or pressed against the back of the TV.

Can I cast if my phone is on a different Wi-Fi network than the Chromecast?

No. Your phone and Chromecast must be on the same Wi-Fi network to communicate. If you are away from home and your Chromecast is at home, you cannot cast to it remotely unless you use Chromecast's remote casting feature (available in some apps like YouTube), which requires both devices to be signed into the same Google account and your home Wi-Fi to have internet access.

Why does the Chromecast light stay red?

A red or orange light means the device is powered but not connected to the internet. Check that your Wi-Fi network is broadcasting and that the Chromecast is in range. Restart your router and the Chromecast. If the light remains red after both restarts, forget the Wi-Fi network on the Chromecast and reconnect it using the Google Home app, entering your Wi-Fi password carefully.

Does Chromecast work with all apps?

No. Only apps that have built-in Chromecast support can cast to the device. YouTube, Netflix, Spotify, Google Photos, and many others support it, but not all apps do. Check the app's settings or help section to see if a cast icon appears. If you do not see a cast icon, the app does not support Chromecast. You can always cast your entire phone or computer screen instead using the "Cast screen" option in the Google Home app, though this uses more battery and bandwidth.

What should I do if Chromecast is not showing up in the Google Home app?

Make sure your phone is on the same Wi-Fi network as the Chromecast and that the device is powered on (check the LED light). Close and reopen the Google Home app. If the device still does not appear, restart your phone and the Chromecast. If it remains missing, the device may not be connected to Wi-Fi—check the LED color and reconnect it using the setup process in the Google Home app.