How to set up a new Google Chromecast device and begin streaming content to your TV

To set up a new Google Chromecast, you'll need a compatible TV and a smartphone with the Google Home app installed.

'What is Google Chromecast?': Everything you need to know about Google's smart streaming device

Google Chromecast is a unique device that plugs into any TV with an HDMI port, and can stream content from your phone or computer onto a big screen.
Android Authority

Here's how you can fix Chromecast authentication errors before Google does

A Redditor has discovered that the second-generation Chromecast has an expired certificate authority, which is causing it to fail device authentication and stop working and being set up. As a ...