Intel Wireless-AC 9260 160MHz wireless networks not displayed

[tszpara]

Intel Wireless-AC 9260 160MHz wireless card as part of ASUS TUF Gaming X570 motherboard.

Unable to connect to ANY wifi.  When I click on show available networks I get a black screen.

There should be at least a dozen networks (close neighbors) in range.

I suspect it is a windows setting but haven't found a solution.

If I go here and manually enter everything I can connect so it's not a hardware issue.

[LeonWaksman]

I assume that you have all necessary drivers (include WiFi Driver) installed. Open Windows Settings: Network and Internet>Network Sharing Center>Advanced sharing settings, then check if the Network discovery is on. 

Leon

[tszpara]

[LeonWaksman]

You may want to try to Reset Network Settings.

Leon

[tszpara]

Forgot to mention already tried that.

If I type

netsh wlan show networks

I see a dozen in command prompt but none when I click show available networks

[tszpara · Accepted solution]

Symantec Antivirus was the problem. Removed and replaced AV. Thanks to all who helped.