If you have an old 2017 serial number from a physical box, you can click "Activate" inside the new Free version and enter your old code. This will often unlock the "Legacy" 2017 Soundpools and instruments within the modern, stable interface. Troubleshooting Legacy Activations

Go to the official MAGIX website and download the current Music Maker installer.

If you do own a legitimate 2017 serial number and it isn't working: