So a good few years ago, I bought magix music maker 2015. Thing is, I don't use it anymore...and I want to give it to someone else. Is this possible? I don't really use the account linked with it anymore either, since now I use Samplitude music studio on Steam.
I believe the answer to your question is Yes, but you do need first to deactivate it and remove its serial,number from your account or the person to whom you give it will not be able to register it in his/her own name.
Clearly, once you have deactivated it you should also uninstall it from your computer.
One other caveat: MM2015 is now an "old" version and may well not be compatible with current Windows versions.