Casting from mobile devices or computers to the TV fails.

Each of these steps represents a possible solution to this issue, check to see if the issue is resolved after completing each step

1. Make sure that your device and the TV are connected to the same home network.
2. Make sure the Chromecast built-in or Google Cast Receiver app is not disabled.
   1. Open the  Settings screen. How to access Settings 
      • Using the Quick Settings button (For models released in 2019 or later)
        1. On the remote control, press the  (Quick Settings) button.
        2. Select  Settings.
      • Using the HOME button
        1. On the remote control, press the HOME button.
        2. Select  Settings.
   2. The next steps will depend on your TV menu options:
      • Select Apps — See all apps — Show system apps — Chromecast built-in or Google Cast Receiver — Enable. (Android™ 9 or later)
      • Select Apps — Chromecast built-in or Google Cast Receiver — Enable. (Android 8.0 or earlier)
3. Clear data on Cast function apps, Android System WebView and Chromecast built-in.
   1. Open the  Settings screen. How to access Settings 
      • Using the Quick Settings button (For models released in 2019 or later)
        1. On the remote control, press the  (Quick Settings) button.
        2. Select  Settings.
      • Using the HOME button
        1. On the remote control, press the HOME button.
        2. Select  Settings.
   2. The next steps will depend on your TV menu options:
      • Select Apps — See all apps — Show system apps — Cast function apps — Clear data — OK. (Android 9 or later)
      • Select Apps — Cast function apps — Clear data — OK. (Android 8.0 or earlier)
      Notes:
      • Do the same for Android System WebView and Chromecast built-in as well.
      • For Cast function apps, refer to: https://www.google.com/chromecast/built-in/apps/
4. Reset the TV.
   Note: For how to reset the TV, refer to: How to restart (reset) a Google TV or Android TV™?
5. Restart the device.
   For a mobile device, temporarily turn off the mobile device, and wait approximately one minute before turning it back on.
6. Update the TV to the latest software.
   For how to update, refer to: How to perform a software update
7. Use the following procedure to uninstall updates for Android System WebView and Chromecast built-in. After uninstalling the updates, reset the TV and update these two apps to the latest version.
   1. Open the  Settings screen. How to access Settings 
      • Using the Quick Settings button (For models released in 2019 or later)
        1. On the remote control, press the  (Quick Settings) button.
        2. Select  Settings.
      • Using the HOME button
        1. On the remote control, press the HOME button.
        2. Select  Settings.
   2. The next steps will depend on your TV menu options:
      • Select Apps — See all apps — Show system apps — Android System WebView — Uninstall updates — OK. (Android 9 or later)
      • Select Apps — Android System WebView — Uninstall updates — OK. (Android 8.0 or earlier)
   3. Do the same for Chromecast built-in as well.
   4. After uninstalling the updates, reset the TV.
   5. Update the two apps above to the latest version from the Google Play store.
8. From My Apps in the Google Play Store app, update all of the apps installed in the TV to the latest version.
9. Make sure that your device and the TV have the correct time settings.
   To set the date and time of the TV, refer to the following: How to adjust the date and time
10. For mobile device only: Terminate the Chromecast-enabled (Google Cast-enabled) app on the mobile device, and restart it.
    Note: For details on how to terminate and restart apps, refer to the instructions manual of your mobile device.
11. Restart the wireless router. (Unplug the router, and wait approximately one minute before reconnecting the power.)