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Error saying Nitro License Does Not Exist

David Koning

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David Koning

I manage the nitro licenses for my Company and I am trying to move two licenses onto new computers. I deactivated one of the and when I tried to activate on the new one, it tells me the serial number does not exist. I have entered it into the support portal thing and it tells me it is an active license with 2 available activations but the software won't accept it. How is this possible. I have moved these specific licenses before and never encountered this.


Please advise how I can resolve this.

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  • Official Nitronaut
Reymund Oyong

Greetings @David Koning

Thank you for reaching out through our Community Forums!

An activation issue will likely occur if the version of the license does not match the version of the application that you would like to activate. 

Please check the version of your serial number using our license portal (link below):

From the license portal, kindly take note of the version (the Nitro PDF Pro application installed on the computer must match this version).

To check which version is installed on the computer, launch Nitro PDF Pro and then navigate to the Help tab > About Nitro Pro. 
If the version does not match the license's version, please uninstall and then install the appropriate Nitro PDF Pro version. 

The Nitro PDF Pro installer (versions 13 and 14) can be located from the link below:
https://www.gonitro.com/product-details/downloads - please download and install the version that matches your serial number. 

Kind regards, 

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