I have a regular Chromecast (not sure what generation), and recently got an Ultra. I can't get the Ultra to connect to the wifi. It does see the internet wired, and the regular Chromecast works just fine. I did factory reset. It found a firmware update but that didn't help. I turned off 2.4 Ghz on the wifi AP (TPLink EAS245) so only 5 Ghz wifi was available. I made sure I wasn't blocking any ports or DNS. But during the step to connect to wifi (setup using Android phone on same wifi network), it fails to connect to wifi.
Hey there danielk2,
I apologize about the late response, thank you for being patient! Were you able to fix that connection issue? If not, I'd be happy to help out, as I know networking issues can get tricky. Let me just ask you some questions about what's happening:
I look forward to your response, and if you have any other questions or concerns for me, please let me know!