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Unable to activate on New PC

Kathryn Berliner

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Kathryn Berliner

We are trying to activate serial number on new device. However, we receive an error activating on new device and deactivating from old device. 


When deactivating from old device we receive -24: Activation error: Nitro pro encountered some issues while attempting to activate. 


When trying to activate on new device we receive the same error. The account was originally for version We used the same installer on the new device and confirmed it's the same version, yet we are receiving the same error. Please help. 

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  • Official Nitronaut
Reymund Oyong

Greetings @Kathryn Berliner

Thank you for reaching out through our Community Forums!

Please note that we no longer support Nitro Pro 12 and older versions. 
These versions have reached the end of life (please see Sunset Policy below) and have already been discontinued. Furthermore, their activation servers have been shut down, thus, any activation or deactivation attempt will no longer work.

Sunset Policy: https://www.gonitro.com/product-details/sunset-policy 

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

To upgrade to Nitro PDF Pro 14 with a discounted price, please visit our Upgrade page at https://www.gonitro.com/support/upgrade 

Kind regards, 

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