I have Cubase 9.5 Pro on my Windows computer, and now I want to update Cubase to version 10. How do I do it properly: Do I need to uninstall Cubase 9.5 first (and all related programs like Groove Agent) or simply install Cubase 10 (and all components) over the old version?
Install the full C10, content are shared (like audio loops) and wont take up additional space.
C9.5 will be untouched, you are still able to use it. Keep it, until you are sure everything is working well in C10.
So it wont install over the old version, but content will be updated.
You can safely uninstall C9.5 later.