I use NR cast nodes, but if I remember correctly you need a firewall rule to allow the google devices
to communicate on TCP port 8123+18443 of your core/HA IP.
You may also need a rule to allow communication between google servers and your core/google devices as well. Its been so long I’m not 100%.
Sorry I meant the firewall on your modem/router, not the core itself. Basically making sure that its not blocking any traffic between your core and your google device
There is nothing that im aware. Casting to this device from anywhere else on the network works ok. I figured core might be blocking the google device do to security / cert / firewall rules that may be in place.
I can leave this function elsewhere in the system i just thought i would see if anyone else had run into issues.
Now… I’m running HA both on a different platform but it’s also the supervised version. Still before any TTS would work for me, I needed to add an URL in the settings/system/network. Perhaps this can be something for you to check and/or try?