5G not working on Archer AX6000 and Archer TX20U Plus
I have been having ongoing problems with my AX6000 and wireless networks. I was using an Archer T4U which worked ok for a few years but become very unreliable i the last few months and I decided to get the Archer TX20U Plus. Initially it worked well and I got good connection speeds to the AX6000 of over 1000 Mbps but again in the last week I cannot use the 5G network.
The AX6000 and TX20U Plus have the latest available firmware and I have rebooted the router and PC numerous times. I have tried setting te AX6000 5G network to Auto and Auto and well as multiple variations of the channel width and channel. The 2.4G network is stable and works well - link speed is 573/573 and I have it on Channel width 40 and Channel 11. Security in the 2.4G channel is set to 802.11b/g/n/ax mixed and 5G channel uses 802.11a/n/ac/ax mixed. Security is WPA2-PSK[AES]. I tried changing the 5G channel to Security WPS3-Personal or WPA3-Personal+WPA2-PSK[AES] but could not connect to the 5G network.
i am using Windows 11 64 bit and reinstalled Windows today hoping that this would help but the problems persist.
I am getting totally fed up with the wireless network and now do not know if the problem is with the AX6000, TX20U Plus or Windows 11.
Please advise asap as to ow I can resolve this problem.
There has not been an update for either of the devices since 2023
thanks
Jose