Kevin_Z wrote Thanks for your valued reply. What is the serial number of the C4000? When and where did you buy this router and do you have any proof of purchase? One more thing, what is the model...

Kevin_Z wrote Hi, We totally understand your feeling, both of us want to sort it out. May I know the distance between your device and the C4000? Did you try to move it closer to the main router and...

Kevin_Z wrote Hi, May I know if all the devices cannot see the 2.4Ghz ssid at that time? What about your laptop? Try to move them closer to the main router and check whether you can detect the...

Kevin_Z wrote Hi, Thanks for your reply. Can you see the 2.4GHz network name on your device at that time? If you can see it but unable to connect to it, is there any error message? What is the...

When i start using the router i can see 2.4Ghz, but after a day, 2.4Ghz suddenly stop broadcasting. This is my firmware Archer C4000(US)_V2_180322. still no 2.4Ghz, 5Ghz is fine, so weird

Kevin_Z wrote Hi, What is the 2.4GHz light? Does it come on when the 2.4GHz network gone? If all the devices cannot see it? What is the status of 2.4GHz once you logged into the web interface? Note:...