How to Change the Trial Version of Acrobat Pro 9 to Full
- 1). Open the trial version of Adobe Acrobat Pro 9 on your computer.
- 2). Click on the "Buy Now" button on the prompt that appears before it allows you to enter the software. You may purchase the program from any retailer, but you will have to wait for the box to be shipped to you to have access to the serial number. Purchasing the program through Adobe will enable you to receive the serial number within minutes after placing your order.
- 3). Click on the Adobe Acrobat Pro 9 product and go through the shopping cart to make the purchase. You will be required to create a username and password if you do not currently have one, which will allow you to retrieve your serial number if you ever need to reinstall the program in the future.
- 4). Retrieve the serial number from the order confirmation e-mail from Adobe Store or by logging into the Adobe Store using the username and password created while checking out, clicking on "View Order History," and then clicking on "Your Downloads."
- 5). Return to your Adobe Acrobat Pro 9 program, which should still be open, and enter the Serial Number at the prompt.
- 6). Click on "Continue" to finish going through the upgrade wizard and enter the full version.
Source...