"Invalid Serial Number" Error Message

"Invalid Serial Number" Error Message

If an "Invalid Serial Number" error message displays when you are attempting to install your ActivePDF product, please contact Customer Service.

A common cause for this error message is that your license key is valid for a build number prior to the build number of the product you are attempting to install.

If this error message displays, please submit a support ticket at https://support.activepdf.com/

• If this is the first ticket you have submitted, select the Register 
• If this is not your first ticket, select the Submit a Ticket

Note: The ActivePDF Support ticket registration system is the same web page as the ActivePDF.com registration system, so separate registrations are no longer required.