Netflix no longer supports casting shows from a mobile device to most TVs and TV-streaming devices. You’ll need to use the remote that came with your TV or TV-streaming device to navigate Netflix.
If you're using an older Chromecast device or a TV that works with Google Cast, follow the instructions below to troubleshoot the issue.
If the "Cast" icon is missing from the Netflix app on your mobile device, it's usually because it's not connected to the same Wi-Fi network that your Chromecast or the TV that works with Google Cast is on. If you can see and tap the Cast icon, but your Chromecast or TV doesn't appear, follow these steps instead.
If you're on an ad-supported experience, you won't be able to use your TV as a display for Netflix content playing on your mobile device (casting or mirroring).
If your account isn't on an ad-supported Netflix plan, follow the steps below to fix the problem.
Open the Google Home app on your iPhone or iPad. If you don't have it, you can get it from the App Store.
In the lower left, tap the Home icon, then scroll down to find your Chromecast.
If you can't find your Chromecast, or it shows as Offline, make sure it's plugged in and connected to the same Wi-Fi as your iPhone or iPad. For help, follow Google's steps to connect your Chromecast to the right network.
If your Chromecast appears as On, it's on the right network.
Open Netflix, then try 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.
Turn off Chrome extensions
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.
Note:Extensions listed under Chrome Apps don't need to be turned off.
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.