Make sure you have the most recent version of VLC (version 3.0 or above) on your computer.Make sure your Chromecast and your computer are connected to the same WiFi network.Disable the VPN on your computer, otherwise, Chromecast might not work.Here’s how to cast VLC to a Chromecast device. And when your computer screen is too small to fully enjoy a movie, you can even use VLC to cast media to your TV. This is because it can play almost every video and audio format with ease. VLC is one of the most popular media players among Mac and Windows users alike.