Unable to activate Nitro Prio version 12 on new laptop

[Elona Vlodrop]

Hi,

I am trying to activate Nitro Pro Version 12 on a new laptop. I have already deactivated it on the old one.

When I check the serial number, it says that there are 2 activations available, but when I try to activate, I get a message saying that the serial number doesn't exist.

I've tried uninstalling and reinstalling but with the same result.

Can you please assist? TIA!

[Allain Umailin]

Hello @Elona Vlodrop,

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

In order to further assist you, could you please provide the serial number of your Nitro Pro?

Lastly, a screenshot of the error message you have received after entering your serial number.

To find out how to take a screen shot using Snipping Tool, check out this link: https://support.microsoft.com/en-us/windows/use-snipping-tool-to-capture-screenshots-00246869-1843-655f-f220-97299b865f6b 

To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'.

Thank you very much in advance and I am looking forward to hearing back from you. 

[Elona Vlodrop]

Thank you for the prompt response! I have sent the screenshot and serial number to you via private message.

[Allain Umailin]

Hello @Elona Vlodrop,

Thank you for the private message.

Please be informed that '-20: Error - Invalid License Number' means the serial number you are trying to activate is for a different version of Nitro Pro. Looks like we need to uninstall the current version of Nitro Pro on your computer and install Nitro Pro 12.16.9. We then activate it using your serial number. Kindly follow these steps:
 
1. Uninstall Nitro Pro from your computer by going to Control Panel > Programs > Programs and Features then reboot the machine.

2. Please clear all your downloads folder or delete all downloaded Nitro installers. This step is important because we noticed that if you are saving all the installers and you download them in the same folder (like the downloads folder), the EXE can pick up any MSI installer in that folder and you may pick-up one of the older builds instead of the newly downloaded package.

3. Download your Nitro Pro 12.16.9.574 using these offline link/s:

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: 
https://support.microsoft.com/en-ph/help/15056/windows-32-64-bit-faq

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

Thank you for choosing Nitro and I hope this helps.