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 
Can confirm that this works using compatibility mode for Windows 7 in Windows 11 build 22000.1
It did fail the first time, but worked on the second attempt. Maybe some odd read/write delay. Sometimes shit works.
TP Link driver for Atheros AR9271 chipset working with Alpha adapter on Windows 11 with no issues.
This solution worked for me 100 percent successful with one lick. Thank you. You saved my $65 spent on ALFA036NHA.
I just want to mention that the solution offered by a user “Perez” is working as of 9/3/2021
32 bit
http://download.windowsupdate.com/msdownload/update/driver/drvs/2013/03/20358877_0ceb3ce21d48acbcc799d3971602bec0e9582250.cab
64 bit
http://download.windowsupdate.com/msdownload/update/driver/drvs/2013/03/20358878_a8d486ae118b8c44d15e2f287f70
Just manually install those drivers, I just used 7z to extract the cab and installed the driver with the .inf
08/28/2021 does not work at win10 ver 21h1