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Activation not working

Eric Niergarth

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Eric Niergarth

I'm following instructions online and my Nitro PDF software is saying the Serial Number does not exist.


Serial : 504***************


I've already done this below and it says please select the device to deactivate but there is none:


Once you click “Deactivate”, you can activate your license immediately by entering the below serial number into Nitro Pro.

Serial Number 504***************
Version 13
Status Active
Number of Activations 0
Number of Activations Allowed 2
Edited by Reymund Oyong
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  • Official Nitronaut
Reymund Oyong

Greetings @Eric Niergarth

Thank you for reaching out through our Community Forums!

Please check which version of Nitro PDF Pro is installed on your computer. This can be located when you launch the application and then navigate to the Help tab > About Nitro Pro. If the version is not Nitro PDF Pro 13, please uninstall it and then install version 13 using the installer from the link below:

https://www.gonitro.com/product-details/downloads - click the 'Download Nitro Pro 13' link. 

Once Nitro PDF Pro 13 is installed, you should be able to activate it using your version 13 license. 

Kind regards, 

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