Netflix has quietly removed the ability to cast content from its mobile apps to most modern TVs and streaming devices, ...
It maintains some allowances for ad-free subscribers using legacy Chromecast or Google Cast hardware.
Netflix will no longer support casting from your mobile to most TVs and streaming devices, regardless of the plan you're on.
There are exceptions for older products, but Netflix wants to encourage you to use your remote control to navigate its UI.
Netflix has now stated in a support page that it will no longer support casting shows from a mobile device to most TVs.