Nest Hub displaying "Check internet connection" after being stable for 3 years

[Lonicker]

I've had 5 Nest Hubs, Nest Doorbell, Nest Thermostat, and several Nest mini's for almost 3 years with no issues. In the last 3 weeks, the Hubs will constantly display "check internet connection". I have had the same internet and network setup the entire time. I have a Unifi system and it's updated and rebooted monthly.  No other devices have an issue with Wifi or connectivity. 

I have tried everything I can think of. 

- new Wifi network

- separating the 2.4 and 5Ghz bands

- changing one Wifi setting at a time to see if it has an impact

- reset and moved Hubs around several times

- the only thing that has worked is moving a Hub to another Wifi router completely, this makes no sense because everything was working for the last 3 years. 

[stiv0b]

I am having a similar problem but it's with initial setup. I keep getting check internet connection even though every other device can reach the internet via my router. The only way I can get my Google Nest Hub connected is to use my phone as a hotspot and the Google Home app on my tablet to set it up. When I try to change the WiFi network on the hub to my router, same error. Google says it's my ISP and my ISP says it's Google.

[Jake]

Hey all,

Sorry for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

[Jake]

Hey all,

I wanted to check in and see if you are still in need of any help? Please let me know, as I would be happy to assist.

Best regards,
Jake

[Jake]

Hey all,

I want to ensure you are good to go, and everything is working properly. Please let me know if you are still having trouble, as I will be locking the thread in 24 hours due to inactivity. 

Best regards,
Jake

[Jake]

Hey all,

It has been a few days since the last reply, and I am going to lock the thread at this time. If you have any questions, please feel free to create a new post. 

Best regards,
Jake