. The standard process for modern Creative Cloud applications is automatic upon signing in with your Adobe ID. Official Activation Methods Activation For Older Adobe Products | Community
If you purchased through a retailer, you’ll need to enter your redemption code before the app will activate. Check Your Devices: activator for adobe products install
Once the activator has done its job, complete the installation of the Adobe product. You may need to restart your computer. activator for adobe products install