Unable to activate license

[Jason Boriss 0]

I have Nitro license that I've deactivated on one computer and need to reactivate on another.

When I try to activate it says invalid.  The activation portal did not resolve my issue.

I'm shocked that I have to ask for help activating my license by writing on a community forum, especially after purchasing 4 licenses.

[AllainU 0]

Hello @Jason Boriss,

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 that you are having activating?

To send it 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. 

[AllainU 0]

Hello @Jason Boriss,

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 13. 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 13 using these offline link/s:

x32 http://install.nitropdf.com/professional_13310605/en/retail/nitro_pro13_ba_x86.msi 
x64 http://install.nitropdf.com/professional_13310605/en/retail/nitro_pro13_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.

[Karsten 0]

I had to uninstall Nitro 13. The key was only shown to me with the first 6 numbers, I don't have a complete key because it was an update from 12 to 13. I can't unlock Nitro 13 again. what now?

[AllainU 0]

Hello @Karsten,

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

Please note that Nitro Pro 13 is designed to hide the 12-digits of your serial number for security purposes which is why I have sent you a private message to provide your key.

Also allow me to share we have Nitro Pro 13.31 and you can install this latest build using below direct MSI installers:

x32 http://install.nitropdf.com/professional_13310605/en/retail/nitro_pro13_ba_x86.msi 
x64 http://install.nitropdf.com/professional_13310605/en/retail/nitro_pro13_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 your serial number.

Happy new year and I hope this helps!