No option to download windows support software for Bootcamp Assistant

Hi guys,

Im on a MacBook Pro (Retina, 13-inch, Early 2015), I have just upgraded from Windows 8.1 to Windows 10 and my Bluetooth has stopped working.

I am trying to follow the troubleshooting steps on this page: If you don't see some features of your Mac in Windows - Apple Support

Others on the forum have had this issue and this is where people have told them to go and download the latest Windows support software. However I don't have that option when I open up Bootcamp assistant, this is all I see:

Does anyone know why I don't see the option to "Download the latest Windows support software from Apple" as seen in the troubleshooting page.

Thanks