Google Nest WiFi won't connect to internet after power outage (long story)

[relleric]

Long story.  Upgraded to Nest WiFi back in late Oct 2022.  Had intermittent slowdown/connectivity issues, happened upon the double NAT threads, so I put my Netgear CAX30 cable modem/router into bridge mode (Xfinity service), and everything seemed fine.  Had a few fluctuations in speed and some dropouts, but nothing too severe.

Fast forward to this past Sunday, we had a couple of short power outages in a row.  Nest WiFi would not connect to the internet.  Power cycled everything (cable modem, nest wifi router) to no avail.  Factory reset Nest WiFi and added points back, still would not connect to the internet.  Decided to put Netgear CAX30 back into router mode, and now Nest WiFi connects to internet.

I hadn't changed anything with the setup between the time I put the cable modem into bridge mode and last Sunday, so wondering why Nest WiFi refuses to connect to the internet suddenly with bridge mode.

I then tried cycling the Nest WiFi Cloud Services option in Privacy settings through the Home app, then power cycled everything according to instructions, the behavior is the same.  If I switch back to bridge mode, Nest WiFi will not connect to the internet.

Noticed that firmware updates for Nest WiFi were out in Sep (prior to my upgrade to Nest WiFi), and there was a firmware update to the Netgear CAX30 in either Sep or Nov 2022, but everything was fine until the power outage this past Sunday (3-12-23).

Thoughts/suggestions?

Thanks!

[relleric]

Definitely not cables/loose connections, it works fine when cable modem/router is returned to router mode.  Restarted countless times.  I changed nothing in the configuration.

Could potentially be firmware on Google Nest device(s), and/or firmware on Netgear CAX30 cable modem device (either from manufacturer or Comcast/Xfinity).

I factory reset the Google Nest devices, but not the Netgear cable modem, so that could be a possible fix, but I doubt it.

Not sure which support to contact first (Google, Netgear or Comcast/Xfinity), but will choose one and hope they don't point fingers at each other. 🙂

Thanks!

[relleric · Accepted solution]

Did a factory reset of the Netgear cable modem, had to re-provision the device thru Xfinity even though the same MAC address.  Originally Google didn't come online after rebooting the cable modem after changing to bridge mode, but rebooting the cable modem again seemed to work.

I have no idea why a sudden power outage would cause this.  I am 100% sure I power cycled everything on Feb 26 before going out of town, and didn't have any issues until short power outage on Mar 12.  Weird.

Will do periodic power cycles to see if this happens again, and if it does, I may just leave the cable/modem in router mode.

Thanks!

[AbigailF]

Hey folks, 

Thanks for lending a hand, @RachelGomez123.
@relleric, I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,
Abi

[relleric]

No, I'm good.  Thanks!

[AbigailF]

Hello relleric, 

Awesome — glad to hear that your issue is fixed. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else. 

Best, 
Abi