Hi Kevin,

 

''the firmware is the latest, at least that what it says when I request a firmware update.  It is the 2nd 5 ghz channel and I've performed a hard reset and even tried to remove all the security by enabling the guest wifi and still no luck.

 

i contacted support via the online chat feature, they were unable to,solve it except to suggest that I perform a hard reset which I did.

 

im thinking there's something mechanical wrong with this new router, I might have to return it..

 

cheers.

Things to try... Reset to factory and re-enter your settings manually (not restore from backup). Swap the C5400s so the one that is not working is in place where the working one was. Ensure both are not on the same channel when using the 5GHz. If different channels, try a different channel. On your device (PC) delete the the network and then re-add it. Set up the non working C5400 on your network by it self. Let us know if any of these things work for you.

I just tried removing the security from 5GHz-2, then tried several devices to connect after clearing their network history, still it says 'Unable to join the network "JT2012_2", the first 5GHz-1 is named JT2012 and works fine as does 2.4GHz.

 

Firmware is: 1.2.2 Build 20170912 rel.56240(5553)

 

Hardware is: ArcherC5400 v2.0

 

MAC Address: B0-BE-76-8B-DD-C7

 

S/N: 218A011R00492

 

I bought this via Amazon.ca 2 days ago, I've been trying since then to connect to 5GHz-2 in every way that has been suggested and that I have tried, reset's, reboots, no security, changed passwords, changed SSID.  I can see the network, I can select it but then my password always fails and eventually it tells me that it's unable to join the network.   I even tried entering the wireless password that comes with the device, nothing seems to work.    Please keep in mind that I have not changed any settings of the device from default except the SSID labels and passwords, no other settings were changed.

 

Thank you for your offer to help, I really like the device as I'm trying to replace my Google WIFI (4 pucks) and am hoping this will be the one.

 

 

I did one more test, I changed the channel of 5GHz-2 from Auto to 165 and I was able to connect but with very low performance.  With 5Ghz-1 I get 500mbps downloads and with 5GHz-2 I get 80mbps, I have 1000mpbs service.

 

I did try to change the channel to 149, 153, 157, 161 and of course Auto and all them fail to accept the password - the only one that works is channel 165 but as I mention, it's slow.

 

Is there a solution to this?

 

Cheers.