After you install Microsoft Expression Design, you can enter a product key at any time during your 30-day trial period by clicking Enter Product Key on the Help menu.

A licensing dialog box appears each time you open Expression Design until you enter a valid product key. The dialog box contains the following two options:

  • I have a product key and want to license Microsoft Expression Design   Choose this option if you have a valid product key and want to enable full licensing rights to your copy of Expression Design.

  • Continue using the trial version of the product   The trial version does not require that you enter a key, but after the 30-day trial period ends, you will be prompted to enter a valid product key to continue to use the product.