I researched it for a long time ( My THX driver was lost, have only standart realtek driver with no sound thx effects, THX Spatial Sound App gives Error Message)
So before we starts
You musst remove the Realtek Audio Driver, after then the THX Sound App.
Restart !
When you see there is no Realtek Sound Driver Installed in Device Manager then was correct
Check Windows Update manualy ( Windows installed 6.0.9079.1 Realtek Audio driver automatic)
Please don´`t install another VERSION !!
When the Download is not start you can download it here:
https://www.catalog.update.microsoft.com/Search.aspx?q=6.0.9079.1
Check your Windows Version at Info before !
Next install it, Restart, and install the THX Spatial Sound App from Microsoft Store here:
https://www.microsoft.com/store/productId/9NC521C2JHDK
next download the THX Sound Driver from this Side:
https://www.monstersdriver.com/drivers/huma/H4_V4.1/THX.zip
Install the exe file and restart
It Works
i hope i have help you my Problem was solved ^^