If the "Cast" icon is missing when you try to watch Netflix on your Chromecast, it usually means the device you're trying to cast from needs to be refreshed.
Follow the troubleshooting steps for your device below.
From your Android, open the Google Home app.
If you don't have the Google Home app, download it now.
At the lower left of the screen, select the Home tab.
Scroll down to the Devices section and look for your Chromecast.
If your Chromecast is listed, it is on the same network as your Android.
If your Chromecast isn't listed, it may be connected to a different network than your Android. Visit the Google support website for help switching networks.
Once your Chromecast is on the same network as your Android, try Netflix again.
Turn off your Android. Make sure it's powered off, not just locked.
Turn it back on.
Try Netflix again.
Open the Google Play Store.
Tap Menu , then select My Apps.
Select Google Home if it is listed, then tap Update.
Select Google Play Services if it is listed, then tap Update.
Once both apps have been updated, try Netflix again.
You may need to restart your device to complete app updates.
Turn off your device. If your device has a power cable, unplug it.
Make sure your device is completely off, not just in sleep or standby mode.
Leave your device off for 15 seconds.
Turn on your device and try Netflix again.
The Netflix app may have issues with emojis or special characters in your Chromecast's name. To fix this problem:
Open the Google Home app on your mobile phone or tablet.
Tap your Chromecast's name from the device list.
Tap the Settings icon, then Device information.
Tap Device name and remove any emojis or special characters.
Tap Save.
Reopen the Netflix app and try again.
From the Netflix app, tap More or your Profile icon
.
Scroll down and tap Sign Out.
Tap Sign Out again to confirm.
Once you have signed out, sign back in and try Netflix again.
From your iPhone, iPad, or iPod touch, open the Google Home app.
If you don't have the Google Home app, download it from the App Store.
From the Home tab, look for your Chromecast in the device list.
If your Chromecast is listed, it's on the same Wi-Fi as your iPhone, iPad, or iPod touch.
If your Chromecast is not listed, it might be using a different Wi-Fi than your iPhone, iPad, or iPod touch. For steps to fix this, go to the Google support site.
Once your Chromecast is on the same network as your iPhone, iPad, or iPod touch, try Netflix again.
Turn off your device. If your device has a power cable, unplug it.
Make sure your device is completely off, not just in sleep or standby mode.
Leave your device off for 15 seconds.
Turn on your device and try Netflix again.
The Netflix app may have issues with emojis or special characters in your Chromecast's name. To fix this problem:
Open the Google Home app on your mobile phone or tablet.
Tap your Chromecast's name from the device list.
Tap the Settings icon, then Device information.
Tap Device name and remove any emojis or special characters.
Tap Save.
Reopen the Netflix app and try again.
If you use Chrome, you can turn off unnecessary add-ons.
In the address bar, enter chrome://extensions.
Turn off any extensions that are turned on.
Try Netflix again.
If these steps solve the problem, try turning on your extensions one by one to determine which one is preventing Netflix from working properly.