Designer is available as a stand-alone installer and is also bundled with WorkBench. If you are using a stand-alone installer for Designer, follow these steps:
Contact Adobe Support to download the Designer installer.
If you have a previous version of Designer installed, uninstall the previous version before proceeding.
Launch the Designer installer by double-clicking setup.exe.
Proceed and provide your details and the serial number on the Personalization screen.
If you accept the license agreement, click Next to proceed.
(Optional) change the default installation path, if you want to install Designer at a location of your choice. Click Next.
Click Back to change any preferences. To install Designer, click Install.
Click Finish when the installation completes.