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Activation of Existing Product

Grant Rijsmus

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Good day,

I got a new laptop and trying to activate for license.

I had Nitro Pro which I have installed again. I have deactivated all previous activations, but when I try use my serial number to activate again it gives me an error -24 : Activation Error.

Your assistance would be appreciated.

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  • Official Nitronaut

Greetings @Grant Rijsmus

Thank you for reaching out through our Community Forums!

Please note that we no longer support Nitro Pro 12 and older versions as these versions have reached the End of Life (see Sunset Policy) and 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. 

To upgrade to the latest version with a discounted price, please visit our Upgrade page at https://www.gonitro.com/support/upgrade 

Kind regards, 

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