Cubase downgrade

Hello! I would like to ask if it is possible to install an earlier version of Cubase, e.g. 9 Pro, if I am currently using 10.5 Pro? I would like to test an earlier version if it hangs when closing projects or exiting the program. As far as I remember, the first Cubase version I bought was 9 Elements, then 9.5 Elements and now 10.5 Pro. Thank you for your help!

Yes, you can.