@Ken_Zen3 

Hi,

I can't speak about the Archer TX20U Plus in particular, because I don't own this model.

But I can tell you the following story. A while ago I bought an AX1800 USB Wi-Fi adapter made by another vendor. It is based on the same Realtek 8832AU chip as yours and hence uses the same driver software. The computer I intended to use it with is based on AMD hardware (Ryzen CPU and B450 chipset). But I've never got it to work. I am seeing the exact same behavior as you've described. Everything appears to be installed properly, but upon trying to connect to a Wi-Fi network Windows says that it can't connect.
I have tried any suitable driver package I could find, tried all of the different USB ports (USB2.0, USB3 5Gbps, USB3 10Gbps) and even updated the BIOS of the computer to the latest version, but no luck.

To crosscheck whether this AX1800 USB Wi-Fi adapter was defective or not I installed it on another computer that is based on Intel hardware and, lo and behold, the USB Wi-Fi adapter worked fine, just like one would expect it to.

So, in case you find a solution outside of this TP-Link forum, then I would be really thankful if you could still share it here, because it might also work for me.

Select the Start button > Settings > Network & Internet > Status. Open Network & Internet Status settings.
Under Change your network settings, select Network troubleshooter.
Follow the steps in the troubleshooter, and see if that fixes the problem.
 

Hope This Works,
Peter