After installing Microsoft® Expression Blend™, you can enter a product key at anytime during your 60-day trial period by clicking Enter Product Key on the Help menu.
30 days before your trial license expires, you will be presented with a dialog box when you open Expression Blend. The dialog box will contain the following two options:
- I have a product key and want to license Microsoft Expression Blend Choose this option if you have a valid product key and want to enable full licensing rights to your copy of Expression Blend.
- Continue using the trial version of the product The trial version doesn't require you to enter a key, but after the 60-day trial period ends, you will be prompted to enter a valid product key to continue using the product.