Way 2: Using professional product key recovery tool if desired Also, if you downloaded your adobe acrobat online, you can just sign in to your account and then go to View Product Registration where you might find your key. But you can try again.If it's sold to you in box, you can check its packaging for it. However, this way doesn’t work in some versions or in some cases. You can try to find it by expanding the Help Menu and then choose About Adobe XXXX. Way 1: Looking for the product key you paid for To retrieve your product key, you should check for product key (also called serial number or CD key) from Adobe acrobat itself first of all. This page is posted to show you how to recover product keys of adobe acrobat (X and Pro included). How to Recover Product Key of Adobe Acrobat