@StuartP 

Good to know.

I referred this thread to TP-Link Support in the UK this morning asking them to put the issue into Problem Managment, having raised it with the Dutch arm (who knows if they ar actually different) in the week again and being asked to jump through various scripted hoops as an incident rather than actually addressing the obvious problem.

Remains to be seen if they bother.

@StuartP i am also facing the same issue, this is an indian variant, i replaced the first C6 to amazon thinking its a hardware issue. But i am getting the same issue in new device also and its very annoying. Is there any temporary fix as of now? 

@Kevin_Z Please solve this issue tp link. All users have the same problem. And you guys did nothing to solve instead asking questions back to users. Kindly update the firmware that will solve this annoying problem asap. Tq

@Joe6thomas also it seems that they have sold me a US variant here in India, i cannot update to the new firmware even manually when i am trying from the indian website, but the us firmware works. This issue needs to be solved i have few old devices which only uses 2.4ghz network and its a pain now. 

@Kevin_Z 

Hi Kevin!

I just bought the same Archer C6 v2 router a few weeks ago brand new and I have a similar problem with the 2.4GHz Wi-Fi, but MULTIPLE TIMES A DAY!

I have "Smart Connect" on, so I notice it as devices which only supports 2.4GHz, cannot connect back on the network, 5Ghz ones still works fine. After a reboot it's okay but usually within a day it's back and sometimes it happens multiple times a day....

It's so so so frustrating..... When are you going to fix this issue? It clearly looks like a software issue or a serious general hardware one....

I tried it in both Access Point and Router mode, but it's the same.

The router is on the latest firmware: 1.3.0 Build 20200402 rel.52000 (- I was thinking about trying DD-WRT on the device but I'm pretty sure it'd ruin my warranty.)

Tell me if I can help you troubleshoot the problem, but please fix it, I don't want to change brands, I was always satistied with your products in the past. I also have System Log on, I don't know if it could help.

@StuartP 

..But I'm pretty sure that ends up in a "warranty void" situation haha

Same problem

SmartConnect disabled.

5Ghz working very well

2.4 GHz unreachable (password incorrect). Work after a reboot. Occurs many times per day.

Firmware 1.3.0 

All my network is affected, I can't work in good conditions, please focus on this problem.

if beta firmware or diagnostic is necessary don't hesitate. 

New firmware release. 

New firmware release.