Sibelius Ultimate is activated via AVID Link. AVID Link is installed with Sibelius /Sibelius Ultimate and is started automatically every time you start your computer. The AVID Link is active on your computer, you can see the icon in the upper screen bar on macOS and in the system tray on Windows.  

Click on Products on the right side of the AVID Link window. Here you can see the products installed on your computer and if necessary activate or deactivate them. Please allow 1-2 minutes for the AVID Link to sync with your online AVID account and activate Sibelius for use on your computer with a short message saying "Successfully activated". You've done it! Have fun with Sibelius!

Unfortunately it can happen that the automatic activation does not work. In this case you can create a support ticket using the link below and we will contact you to solve the problem.