uninstall Cubase?

Can I uninstall Cubase, and install it again because I upgraded windows from 8.1 to Windows 10 :question:

yes, ofcourse.

why shouldn’t you be able to?

the best feature of the dongle is that you bring that to any cubase installation and you are up and running. no need to register again

you might want to look into backing up your preferences and presets if you are going for a clean install