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Unable to upgrade from Nitro PDF Pro Version 12 to 13

Ruckus DeWhitte

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Ruckus DeWhitte


I'd like to upgrade my Nitro PDF Pro License from version 12 to version 13. When I enter my serial number in the online upgrade tool, I receive an error message:


We were unable to validate your serial number. Please ensure you entered it correctly. If you believe you are eligible for an upgrade, please leave a post on our Community Forum and update us with your issue.

I have the serial number and reference number from my original order several years ago. Please let me know what else is needed from my end. Thank you.

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It is impossible to upgrade from 12 to 13 I have tried many times and it keeps saying that the licence no is invalid and refers me back to the forum. can someone get hold of this and sort it out for me please.

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  • Official Nitronaut

Hello @John Tierney

Thanks for reaching out!

To upgrade to version 13, please proceed to the following web page,


Enter your serial number and follow the prompts to receive a new Nitro Pro 13 serial key and installation files.

Please let me know how that goes.

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