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-24: Activation Error

Ann Marie Doherty

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Ann Marie Doherty

Dear sirs,

I require some assistance please.  I cannot reactivate my account because I get the above activation error, I understand that this is displayed because my serial number is an older version and I need to upgrade.  I have tried to follow the advice on how to find out which version of Nitro Pro is installed however when i sign into my account the menu bar with the option 'about Nitro Pro' is not displayed.  I urgently need to reactivate my account, therefore your assistance would be greatly appreciated.  FYI our serial number is 234600-xxyyzz-715694.  

I look forward to hearing from you.

Kind regards,

Ann Marie

Edited by Allain Umailin
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  • Official Nitronaut
Allain Umailin

Hello @Ann Marie Doherty,

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

We want to make you aware of the change to your product that may affect its activation performance (e.g. -2: Error - Bad parameter or -24 Error: Activation Error or -79: Activation Error) and to continue offering our customers the very best PDF tools, please install Nitro Pro using the below offline English MSI installers:

x32 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_ba_x86.msi
x64 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_ba_x64.msi 

To know if you have 32-bit or 64-bit, please refer to this article: 

After installation, you can activate it by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering the same serial number

Thank you for choosing Nitro and I hope this helps.

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