You can do this by following the link here:
Also, see my Invalid Serial Number link for more information.
Welcome to the community Steven!
The most common cause of an invalid serial number error is that the licenser has been upgraded per a subscription contract that has since expired.
As Camilo and Celine are gone for the day, would you please either send me a Private Message (click on my philip.s profile name and then "Send this user a private message") with your serial number or contact our License Assistance Team for direct support.
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