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Cannot activate NitroPDF

Alain Janquart

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Alain Janquart


I instellad a trial version today, and then I wanted to activate with one of the serial numbers I have.

But it refuses to activate. No idea why. The serial starts with 504xxxx.

How can I solve this issue. 




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

Greetings @Alain Janquart

Thank you for reaching out through our Community Forums!

Could you please try to activate again and if the issue persists, kindly provide the exact activation error message. 
In case you are receiving a serial number does not exist error message, please uninstall Nitro PDF Pro on your computer 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. 

I recommended installing Nitro PDF Pro 13 as this is the version of the license you purchased under email address ***@comiteri.be.

Kind regards,

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