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-23: Error - Licence number already used


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Tjaart Coetzee

Hi All,

I have swapped out hard drives in my laptop and deactivated Nitro Pro 12 before I installed the new drive.

I am now getting this -23 error on this new hard drive and have even tried deactivating the licence using the site below:

Activating Nitro Pro | Nitro (gonitro.com)

This site says I have zero (0) activations currently. I tried the manual activation which says process unsuccessful... License Key already used

Is there anything I am missing? Any help would be much appreciated.

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  • Official Nitronaut
AllainU

Hello @Tjaart Coetzee,

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

As a courtesy of being a valuable customer of Nitro, we want to make you aware of an upcoming change to your product that may affect its performance. 

To continue offering our customers the very best PDF tools, we’re upgrading our servers and subsequently shutting down the one your older version of Nitro Pro runs on so please install Nitro Pro 12.16.6.574 using below direct MSI links:

x32 http://install.nitropdf.com/professional_12166574/en/retail/nitro_pro12_ba_x86.msi 
x64 http://install.nitropdf.com/professional_12166574/en/retail/nitro_pro12_ba_x64.msi

To know if you have 32-bit or 64-bit, please refer to this article:
https://support.microsoft.com/en-ph/help/15056/windows-32-64-bit-faq 

After installation, you can activate 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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