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Re-activation Error when changing computer for NITRO PRO 7


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HI Admin,


I am having problem with activation for my NITRO PRO 7 due to changing computer.

I have done the DEACTIVATE in old computer, but when try to re-activate in new computer it returns "Unknow Error".

when i try to browse online for getting the activating -code, the old activation page does not assist anymore.

Please assist


Thank you


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  • Official Nitronaut
Allain Umailin


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

Please note that we no longer support Nitro Pro 7 and its activation servers have been shut down which is why you are getting an error message (e.g. -24 Error: Activation Error and Unknown Error). 

We recommend to upgrade to our latest version, V13, 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 13, please visit our Upgrade page https://www.gonitro.com/pro/upgrade 

Alternatively, you can upgrade to the latest build of Nitro Pro 12. Per our Sunset Policy, https://www.gonitro.com/nps/product-details/sunset-policy , we have stopped making feature enhancements to version 12 once we released version 13.  

You can find Nitro Pro 12 installer in this page and activate it with your current Nitro Pro 7 serial number 234600-xxxxxx-689846:


Thank you for choosing Nitro and I hope this helps.

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