CAX80 loses 2.4 wifi band

[KWE325]

This has happened to me twice in the last month - the 2.4 GHz WiFi band shows up as available, the light on the modem is lit but it cannot connect to anything, nor can anything connect to it. The ethernet and the 5 GHz WiFi band both remain fine and functional. A reboot corrects this issue.

Any ideas as to why this might be happening?

[FURRYe38]

What Firmware version is currently loaded?

What devices do you have all connected? 

What channel configurations are currently set on the router?  
Is Smart Connect enabled on the modem? 
Any Wifi Neighbors near by? If so, how many?

[KWE325]

Firmware is v2.1.5.2

Connected devices include Roku TV, Amazon Echo, ring camera, MacBook Air laptop, Epson printer, iphones and a Galaxy tablet.

Channel for the 2.4 wireless is Auto (9).

SmartConnect is NOT enabled.

On any given day there is as many as 3 or 4 wifi neighbors.

[FURRYe38]

What devices do you have all connected?

Try setting manual channel 1, 6 or 11 on 2.4Ghz

Does the front LED on the modem for 2.4Ghz turn OFF when this happens?

Has a factory reset and setup from scratch been performed since last FW update?

[KWE325]

First off, Thank you for all your help regarding this!

DEVICES:

Device Name	IP Address
2.4G Wireless	50" Roku TV
2.4G Wireless	Amazon Fire TV Cube
2.4G Wireless	CuboAi Plus Smart Baby Monitor
2.4G Wireless	Echo Show
2.4G Wireless	Echo Show 8
2.4G Wireless	Galaxy Tab A8 10.5"
2.4G Wireless	Gaming controller
2.4G Wireless	iPhone XR
2.4G Wireless	Kasa Smart Light Bulb Dimmable
2.4G Wireless	Lenovo Think Pad T-590
2.4G Wireless	Macbook Air
2.4G Wireless	Ring Stick Up Cam
2.4G Wireless	Ring Video Doorbell
2.4G Wireless	Wemo Smart Plug
5G Wireless	Amazon Fire HD 10
5G Wireless	iPad 6
5G Wireless	Microsoft Surface 6
5G Wireless	PlayStation
5G Wireless	SmartPhone
5G Wireless	TP-Link - AX3000 Dual-Band Wi-Fi 6 Range Extender
Wired	My Cloud
Wired	Roku Ultra

I have set the channel to 11 on the 2.4 wireless as per your advice.

The 2.4 light remains on; to look at the modem/router, you would not know there was an issue.

The FW update was performed on initial set up last year. This is the second CAX80 I've had, the first one was returned under warranty.

I was under the impression that a factory reset was a last-ditch effort, if all else fails. Is that true?

[FURRYe38]

Lets enabled Smart Connect. 

Yes last ditch and a troubleshooting step. 

[KWE325]

All set!

Again, I thank you for your sage advice and your time as well.

Now I guess I just wait to see if the issue manifests itself again, hopefully not!

[FURRYe38]

Be sure to save off a back up configuration to file for safe keeping. Saves time if a reset is needed.
https://kb.netgear.com/000062080/How-do-I-back-up-the-configuration-settings-on-my-Orbi-WiFi-System

[KWE325]

Yes, I did do that, although I had to wrestle with Windows permissions.

[FURRYe38]

🙄 Always something with Windows.