catalina bootcamp windows 8.1 drivers

Hi.

I have installed Catalina on my mac pro. After that I installed Windows 8.1 using BootCamp.

Everything is working fine. But I am not able to update Drivers.

Is there anyway to get the windows 8.1 drivers? This is what I have downloaded.

https://support.apple.com/kb/dl1837?locale=en_IN

It is not working..... Please assist. Though I can work on windows... Keyboard driver, Wifi etc are not working.

Best regards,

/Dev