Killer Wireless 1535 Wireless disconnect issue solved in 2021

Dell XPS15 9570, purchased in 2018.  Killer Wireless 1535 stopped working in 2021.   I don't use Wi-Fi frequently; sometime in 2021 it started a new behavior.   It would connect, then disconnect within two or three minutes.  The network trouble-shooter would find the wi-fi card had turned itself off.   

I installed these driver packages and inspected the driver installation logs.  All installed successfully

• Killer-Wireless-AC-1535-and-1435-Bluetooth-Driver_906MN_WIN_10.0.0.1118_A16_03.EXE
• Killer-1435-1435s-1535-Wi-Fi-Controller-Driver_4FFJF_WIN64_12.0.0.1118_A17_02.EXE
• Killer-Control-Center-Application_JK9HR_WIN_2.4.3337.0_A17_01.EXE

The issue continued exactly as before, no change.

sfc /scannow found a clean system after updating WIndows 10 to the latest everything.

I found this post, regarding Windows 11:

The Windows driver catalog here: Windows Driver Catalog 
Contains this driver: Qualcomm Communications Inc- Net - 12.0.0.1118 Windows 10 S, Vibranium and later, Servicing Drivers,Windows 10, Vibranium and later, Upgrade & Servicing Drivers Drivers (Networking) 6/14/2021 12.0.0.1118 1.6 MB

I downloaded the .cab file to my temp directory.   Then I opened Device Manager and browsed to Network Adapters, Killer Wireless 1535.   Right click, Update Driver, then Manually.   Browse to the location of this .cab file, in my case temp. 

This solved the connectivity issue completely.   I've been using Wi-Fi for days without a hiccup.

My conclusion is that the Killer-Wireless-AC-1535-and-1435-Bluetooth-Driver_906MN_WIN_10.0.0.1118_A16_03 update falsely claims success in updating the driver.   Note that the Windows Cab contains the same Qualcomm driver the Dell driver package is attempting to install. 

Hope this saves you the hours I spent over several days.