Ultra + Home App + Router

[SunnyGreen]

Ultra previously worked and then I updated to a newer Wifi Router Nighthawk RS700.

Using Google Home app the first part of setup proceeds smoothly but the final step never shows as being able to connect to the network and allow me to cast. However, when I look at devices connected to my network the Chromecast Ultra shows as being connected with a 5G Wireless network and being assigned an IP and Mac address. 

After a couple minutes the Ultra will leave my network and go offline. Even when it is shown for the brief time as being connected I am unable to cast to it. 

Have tried a dozen times to get this thing to work. Numerous factory resets of Chromecast Ultra, reboots of router and internet, creating a new Google Home, checks for both firmware and software updates. Even disconnected everything for an hour to make sure everything was cleared out. 

I am at the point of giving up and using an alternative casting service to Google. Other devices to include Google products have no issues connecting to my router and I am typing this with a Pixel.

Any idea what could be going on or how to fix it?

[SunnyGreen]

 Not sure if it matters but the connection verified by my router to the Ultra is 390 Mbps.

[SunnyGreen]

I also verified that the Mac address listed in the Google Home App for the Ultra is the same Mac address that is assigned and listed by my router.

[SunnyGreen]

Finally the connection only shows as being active for my router as long as I keep the Google Home app open and active. As soon as I close the Ultra is removed from the router connection. Regardless of if it is a couple minutes or half an hour. The Mac and Link rate are still shown and the same after being disconnected but the IP address is just 0.0.0.0 instead of the 192.168.1.99 it should be when connected. 

[DeboraJ]

Hi @SunnyGreen,

Thanks for reaching out to the community! I understand you're experiencing an issue with your Chromecast Ultra because it started after updating to your new Nighthawk RS700 Wi-Fi router. It's definitely tricky when the device briefly appears connected and gets an IP address but then goes offline and doesn't allow casting, despite showing a good link rate. I appreciate all the thorough troubleshooting you've already done, including numerous resets, reboots, and checking firmware. I'd be glad to help.

I have a couple of specific steps that often help resolve this. Please try the following on your Nighthawk RS700 router:

• Disable Access Control.
• Enable the option 'Allow guests to see each other and access my local network' within your router's 'Guest Network Setup.' (Even if you're not using the guest network, sometimes this setting can impact local device discovery.)

Please remember that these steps are specifically for your Nighthawk router, and you might want to check with a Nighthawk representative for a better result if you encounter difficulties. 

Let me know how it goes! 

Best regards,

Debora

[SunnyGreen]

Hi Deborah, thanks for replying. I tried doing that already. It did not recognize even when I disabled access control or split up the triband router and just connect to a dedicated 2.4 or 5g. Router usually shows a solid connection, dedicated ip address, and good internet to the Ultra but Home App insists there is a problem connecting and as soon as I close the Google Home App the Ultra will lose its ip address and connection. I figure it must be some bug with Home App interacting with WiFi 7 routers as a connection is occurring. Sent the info to the Router manufacturer to see if they have any ideas on how to proceed. Continuing to use Home would be convenient but if it does not work I will probably just uninstall and use something else. 

Thanks, Jay

[DeboraJ]

Hi @SunnyGreen,

Thanks for the updates on your case! I appreciate your effort in sending the information to your ISP. As I mentioned in our previous interaction, this inconvenience is likely due to a compatibility issue between your specific router model and the Chromecast Ultra. I'm sure your ISP can provide you with better steps and a resolution for this.

However, we understand you may have your reasons for using this specific router model. So, I want to share our feedback form with you so you can share your thoughts and opinions on this topic. We're always looking for ways to improve our services and products.

Please let me know if you have any other questions or inquiries! I'll be glad to help you.

Best regards,

Debora