Typically a Chromecast connects directly to the internet via a Wi-Fi connection. If you don't have an Internet connection, you can set up a local Wi-Fi network that will still let you use Chromecast without web access.30 Nov 2020
How do I get my Chromecast to connect to my Wi-Fi?
- Plug in Chromecast and visit chromecast.com/setup.
- Connect Chromecast to your Wi‑Fi network.
- Tap the Cast button in a Cast-enabled app.
Why is my Chromecast not connecting to my Wi-Fi?
Make sure you're using the correct password. Try re-entering it again. If you're setting up from a supported iOS or Android device, make sure you're using the most recent version of the Google Home app. The Chromecast device is within 15 - 20 ft of the mobile device or tablet you're using to set it up.