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-24 activation error Nitro Pro 11

Justin Roberts

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Justin Roberts

I bought a NitroPro 11 license back in 2018 and recently I built a new computer and reinstalled it, but my key is listed as invalid with a -24 activation error.


My search on the forums shows that my version of NitroPro 11 has been sunsetted but I don't require premium help.      Does this mean I cannot use my copy of NitroPro 11 and that I MUST upgrade to the latest version?    



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  • Official Nitronaut
Reymund Oyong

Greetings @Justin Roberts

Thank you for reaching out through our Community Forums!

Please note that we no longer support version 11 as this has reached the End of Life. Any installation or deactivation on this version will no longer work as their activation servers have been shut down. 

We recommend upgrading to our latest version, Nitro PDF Pro 14, which comes with significant stability and security improvements and many feature enhancements, particularly in Conversion, OCR, and Accessibility functions. 

You can upgrade your license to the latest version with a discounted price. To upgrade please visit our Upgrade Page located here https://www.gonitro.com/support/upgrade 

Kind regards, 

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