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-20: Error - Invalid License number

Kate Douglass

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Kate Douglass

Hi. I just paid for Nitro pro. I've already gone to the activation portal and it says the serial number I am entering is correct. Still when I paste it into Nitro Pro to activate it gives the error message in the title above. The last digits in the serial are 88778. Can you please help? 


Thank you.

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Reymund Oyong

Hi @Kate Douglass,

Thank you for reaching out to us through our Community Forums!

Our records show that you have a version 13 serial number. 
Please ensure that the version installed on your computer is Nitro Pro 13. You can find this information by going to the Help tab > About Nitro Pro. 
If you see that you are running a different version, please install Nitro Pro 13 by downloading the installer from the following location: 

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

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

Kind regards,

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