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-24: Activation Error

David Guerra

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I am having the above activation error message.  I installed a new SSD and reinstalled Nitro PDF.  I checked the serial number in the portal and deactivated on my licenses.  The portal shows that I have 1 activation remaining.  I enter the same serial number in the activation window and then I get the -24 error message.  I can provide the serial number.  Any assistance is much appreciated.  Thank you.

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Thank you Leslie.  My serial number is *****.  The portal shows that I have 1 activation available.  Take care.

Edited by Leslie V
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David Guerra

Good day.  Just wondering if there has been any progress with my activation issue?  I still can't activate Nitro using my serial number even though the portal indicates 1 activation available.  Thank you.

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  • Official Nitronaut
Leslie V

Hello @David Guerra

This is a Nitro Pro 8 serial number. 

Please note that we no longer support Nitro Pro 8  and its activation servers have been shut down. You may refer to our Sunset Policy here: https://www.gonitro.com/nps/product-details/sunset-policy

Please note, in the license portal, it's indicated as version 12 because older versions of the system and portal are no longer recognized. All version 12 and earlier versions are listed as version 12

We recommend to upgrade to our latest version, V14, which comes with significant stability and security improvements, as well as many feature enhancements, in particular in conversion and OCR functions. To upgrade to Nitro Pro 14, please visit our upgrade page: 
Please let us know if you need any further assistance.


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