Once you have installed an Ansys Discovery bundle, use the Windows taskbar to launch individual Ansys Discovery applications from the > menu.
When you launch an Ansys Discovery application for the first time, you are asked to sign in to your Ansys Account:
See Signing In to Your Ansys Account.
When you successfully sign in to your Ansys Account, this activates the application so that you can begin using it.
The next time that you launch the application, you will not be prompted to sign in again, because your credentials are cached with the first sign-in.