How to Fix "No Cast Devices Found" Error Chromecast

Authored by: Support.com Tech Pro Team

1. Introduction

It can be frustrating when you try to cast and your computer or smartphone can't find your Chromecast for some reason.

This guide will walk you through the basics of getting this problem fixed.

2. Power cycle your Home Network

To Power Cycle Your Modem and Router:

1. Remove the power cable from both your modem and router.
   

1. Verify all lights are off on the modem and router.
2. Wait 10 seconds.
   

1. Plug in the power to your modem only.
2. Wait for the Online light to turn on stop flashing on your modem.This can take up to three minutes.

1. Plug in the power to your router.
2. Wait for the Online light to turn on stop flashing on your router.This can take five minutes or more.

3. Restart

Method 1: Restart with the power cable

1. Disconnect the power from your Chromecast.
2. Wait 10 seconds.
3. Plug the Chromecast back in.

Method 2: Restart with the app

1. Open the Google Home app.
   

1. Select the Menu in the top-left corner.
   

1. Select Devices.
   

1. Select the Options menu for your device.
   

1. Select Reboot.
   

1. Select OK.
   

4. Input

1. If you're having problems finding your device, try pushing the Input button on your remote.
   

1. A menu should come up, giving you options to choose a different input.
   

1. 
   
2. Use the Up and Down buttons on your remote, then push the central OK button to select one.

5. Test

Try casting your screen from your phone, your browser from your computer, or streaming a movie again from your favorite app.

6. Verify Network

1. Make sure your Chromecast is turned on and displaying a background on your television.
   

1. Open the Google Home app on your smartphone or tablet.
   

1. Select the menu in the top-left corner.
   

1. Select Devices.
   

1. Locate your Chromecast in the list, then select the menu on the right for that Chromecast.
   

1. Select Settings.
   

1. In Device settings, look under Wi-Fi. This must be the same network as the device you want to cast from.
   

7. Setup Check

Sometimes, it's best to take a look at the Chromecast itself, to make sure it doesn't have a more specific error as to why we can't cast.

If you look at your TV with the Chromecast, selected, you may see one of following things:

Chromecast WallpaperMost of the time, the Chromecast will cycle through various wallpaper images when it isn't playing media.

Reconnect Me ErrorThe "Reconnect Me" Error is common if the Chromecast can't get online for some reason.

Welcome to SetupIf your Chromecast is not setup yet, it will display a welcome screen to guide you through setup.

8. OS Selection

Our next steps will depend on which operating system you are trying to cast from.

9. Private Network Check

Your computer must recognize your network as a private, home network first.

1. Choose the Start menu, then choose Settings.
   

1. In Windows Settings, choose Network & Internet.
   

1. Make sure Status is selected on the left, then choose Change connection properties on the right.
   

1. Make sure there is a dot next to Private.
   

10. Test

Try casting your screen from your phone, your browser from your computer, or streaming a movie again from your favorite app.

11. Disable AP Isolation

"AP Isolation" or "Wireless Isolation" is a setting available on some home routers that makes it so each wireless device is not allowed to talk to other computers on the same network.

In most cases, this is enabled on public networks (such as hotels, conference centers, coffee shops, etc.) to protect the guests of the business from someone attacking on the free Wi-Fi. In most cases, a 'Guest' network provided by a home router will have the same option enabled as well.

Each router is different, and there are hundreds of models by dozens of manufacturers available. Check your router's settings, and make sure "AP Isolation" or "Wireless Isolation" is not enabled.

12. Test

Try casting your screen from your phone, your browser from your computer, or streaming a movie again from your favorite app.

13. What's next?

14. What's next?

15. Chrome Firewall Exception

1. Select Apple menu > System Preferences.
   

1. Select Security & Privacy.
   

1. Select Firewall at the top, then select the lock icon to unlock the preferences on this screen.
   

1. Select Firewall Options...
   

1. Make sure "Block all incoming connections" is not selected. Make sure "Automatically allow downloaded signed software to receive incoming connections" is selected.
   

16. Resolve "Reconnect Me" Errors for Chromecast

Show Me HowClicking this button will open a new guide that will provide you with steps to resolve your issue.

17. Basic Setup for your Chromecast

Show Me HowClicking this button will open a new guide that will provide you with steps to resolve your issue.

18. Connect your Chromecast to Wi-Fi

Show Me HowClicking this button will open a new guide that will provide you with steps to resolve your issue.