Nitro Pro Won't Activate - Says Serial # is Incorrect and it isn't

[Symantha S 0]

Hi, 

We purchased 2 licenses and are trying to activate them on 2 different computers and when we go to activate the serial numbers, we get an error saying they are invalid. Please fix so we can activate them. 

Thank you!!

[AllainU 0]

Hello @Symantha S,

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

In order to further assist you, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab?

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

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

To find out how to take a screen shot, check out this link: https://kb.gonitro.com/knowledgebase/#/search/screen/000004108 

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

[AllainU 0]

Hello @Symantha S,

Thank you for the private messages.

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_1391155/en/retail/nitro_pro13_ba_x86.msi 
x64 http://install.nitropdf.com/professional_1391155/en/retail/nitro_pro13_ba_x64.msi

If you are unsure if your machine is using 32 or 64-bit, please refer to this link: https://kb.gonitro.com/knowledgebase/#/search/64/000003790 

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!