Alfa has not released a driver package for Alfa AWUS036NHA (Atheros AR9271 chipset) beyond Windows 7.
However it has come to our attention that AWUS036NHA can be stable on Windows 8, 10, and 11 using this third party driver. This driver was made for a different brand product which uses the same AR9271 chipset. Note that after installing, the device will appear in Device Manager as "TP-LINK Wireless USB Adapter" instead of Atheros or Alfa. This is because TP-Link is associated with Microsoft as the Device Developer ID of this driver package.
We have tested the driver extensively and it appears to work with the Alfa AWUS036NHA well. However it should be considered a beta driver until further notice.
Military and First Responder 
Thank you so much for posting this. I was screwing around with installing this driver for over an hour, and coming to the conclusion that I’m too dumb for anything but whatever network adapter the manufacturer decides I should have, when this finally worked.
Windows 10 ver 1909 – plug n play
april 5 2020 this driver did actually work on a new win 10 comp. Thanks for the work to figure this out!!!
ok january 28 2020 i’m here to say that IT WORK for the AWUS036NHA
i’m able to see and connect to my wifi
cool !
This driver does not work for Windows 10 1904.