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NitroPro PDF 12 - Issues


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NitroPro PDF has been working perfectly fine on this computer for ages. We haven't upgraded or changed computers etc. 


But it's asking to activate when we do so the activation wizard it is saying there is a certificate error with the activation server. The time and date is correct on the computer and we are unable to activate the subscription.


Can someone help?



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  • Official Nitronaut
Reymund Oyong

Hi @AlexPCD

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

Please note that we no longer support Nitro Pro 11 and older and its activation servers have been shut down. Thus, any new activation or deactivation attempts on these versions will no longer work. To continue using your existing serial number, please install the latest build of Nitro PDF Pro 12 ( The installer can be located from the following location:

https://www.gonitro.com/nps/product-details/downloads - Click the 'Download Nitro Pro 12' link 

Once installed, activate it with your existing serial number. 

Kind regards,

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