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Unable to activate serial number on new computer

Sara Nelson

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Sara Nelson

I had deactivated my serial number on the old computer and then tried to add the software to the new computer. Still, I am getting an error saying that the serial number doesn't exist or that I must deactivate it on the old computer to install it on the new one.  The deactivation was completed.  I need this software, but I have not found another way to speak with support.

At this point, I have reactivated the serial number on the old computer so that I can post this message.

Benchmark Bookkeepers 


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  • 2 weeks later...
  • Official Nitronaut
Reymund Oyong

Greetings @Sara Nelson

Thank you for reaching out through our Community Forums!

Our records show that you have a version 13 license.
You may have installed version 14 on the new computer, which can only be activated with a version 14 serial number. 
To resolve this issue, I recommend uninstalling Nitro PDF Pro on the new computer and then installing Nitro PDF Pro 13 using the installer from the link below:

https://www.gonitro.com/support/upgrade - click the 'Download Nitro PDF Pro 13' link. 

Once Nitro PDF Pro 13 is installed, you can activate it using your version 13 serial number. 

Kind regards, 

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