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Version 12 and error -23 when activating


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I'm using Nitro Pro and am trying to reactivate on my laptop after some formats/motherboard replacement and I'm being told there are no licences available. When I look at the activating portal to deactivate licences, I see the below which I assume is fine:

Version 12
Status active
Number of Activations 0
Number of Activations Allowed 2


Do you have any ideas on how i can re-activate my laptop?

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  • Official Nitronaut
Allain Umailin

Hello @ICU013,

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

To further assist you, I highly recommend updating to Nitro Pro using below direct installer links:

x32 http://install.nitropdf.com/professional_12163574/en/retail/nitro_pro12_ba_x86.msi 
x64 http://install.nitropdf.com/professional_12163574/en/retail/nitro_pro12_ba_x64.msi

If you are not sure which to pick, this will help: https://kb.gonitro.com/knowledgebase#/search/64/000003790 

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

You should be able to activate after the adjustment that I made in our licensing server.

Thank you for choosing Nitro and I hope this helps!

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