Google Nest Community

This worked!Troubleshoot setupIf setup didn’t work, try the following steps:Reboot your Chromecast.Unplug your router, then plug it back in.Connect manually to your Chromecast’s service set identifier (SSID).Open your phone’s Settings app tap Wi-Fi c...

I'm having the same issue. I tried factory reset, rebooting my router, Chromecast phone. The Google Home App won't detect the Chromecast device.