@kasinath 

Hi,

Since "Enhanced Open" security doesn't provide password authentication anyone who is within the broadcast range of your AXE75 router with a Wi-Fi 6E capable client device would be able to connect to your network.

This might be okay in a restaurant or store to allow their customers to get convenient access to the Internet, but for a home network this is usually not desirable. It would be possible to limit access to your network by utilizing the "Whilelist" feature of the router, but maintaining such a Whilelist would be an ongoing effort.

For a test, can you please connect your Netgear AXE3000 to the 5 GHz (or 2.4 GHz) Wi-Fi of the Archer AXE75 and then check in Windows 11 if it is connecting with WPA2 or WPA3 security? (right-click the Wi-Fi icon in the taskbar, select "Network and Internet Settings" and then click "Properties" near the top of that screen)

  @kasinath 

Thank you Mr.Woozle

I checked the 2.4Ghz & 5Ghz ,both are connected with WPA3 Personal security.

Only 6Ghz wifi connects with Enhanched open security.

So what is your advice.

It is safe to connect with 2.4 or 5Ghz wifi, since it is with WPA3 personal security.

Kindly let me know your opion & advice

Kasinath

  @kasinath 

Enhanced Open security should not be used for a private home network.

Make sure you set the 6 GHz Wi-Fi security setting of your Archer AXE75 back to "WPA3-Personal", even though you are unable to use it at this point.

2.4 GHz and 5 GHz Wi-Fi with WPA3-Personal security are safe.

By the way, if you have set the 6 GHz Wi-Fi of the Archer AXE75 to "WPA3-Personal" and try to connect to it with the NightHawk AXE3000 adapter of your computer, what kind of error message does Windows 11 show you? 

  @woozle 

Mr.Woozle thank you for your reply.

As suggested by you ,I have changed the secutity  for 6Ghz wifi to "WPA3 personal", in the router's web page and saved.

6Ghz wifi has shown in the available wif connections in the desktop.

When I selected 6Ghz wifi connection , it asked for security key and displayed a message that some datas are changed from last time connection and require additional information.

when I entered the security key ,it displayed verfying the network , and then it displayed unable to connect to the network.

As per 2.4 & 5ghz no problem.

Kindly advice further

S.kasinath

  @kasinath 

I don't know what else could be done. 

If this was some kind of incompatibility between the NightHawk AXE3000 and this Archer router, then you might have to wait for an updated driver for the AXE3000 or an updated router firmware.

Have you also inquired about this problem in the Netgear support forum?