Not able to cast

[Mathiasw]

I am not able to cast to the tv streamer. I am on the same network. Problem is that i dont see it in Google home either..

I am connected to an open network without code at a hotel..

please help

[moralesvicente]

Hello Mathiasw, 

Thank you so much for posting in this community. I'm sorry to hear you’re unable to cast content with your Google TV Streamer (4K) and that it's not showing up in your Google Home app. Don't worry; it’s a pleasure to help. 

Let's try to check some steps:

• Ensure you’re on the same home structure where the streaming device is paired.

• After that, if there are no changes, I recommend you perform a factory reset. For your reference, consult this article: How to factory reset your Chromecast or Google TV Streamer, then pair it again using a mobile hotspot. 

Regarding this situation, hotels often have captive portal networks that aren't supported on streaming devices. However, you can use a mobile hotspot to connect your streaming device as an alternative in locations without a traditional Wi-Fi network, such as during travel or in areas with limited internet options. 

Let me know how it goes. 

Best regards, 

Daniel 

[Byteguy]

To add to Moralevicente's excellent information....

Hotels that have open networks often turn on Isolation (devices can talk to the hotel, but not to each other) to protect your device from being attacked and hacked by another device on the same network.  Think of it as a starfish instead of a spiderweb.

Chromecast devices have to be able to talk to other devices in order to show up in the Home app or accept casting commands.

Using a mobile hotspot (or a travel router that makes your own private network attached to the hotels network --- like a spiderweb on the arm of a starfish) is the answer to this problem.   And, you DO want to set something up like that.  Otherwise, everyone else in the hotel will see your Chromecast and will be able to cast to it without restriction at any time.