license does not exist

[Long_Tall_Texan 0]

I am receiving a message that my license does not exist.

Edited November 20, 2019 by AllainU

[AllainU 0]

Hello @Long_Tall_Texan,

Thank you for reaching out to us through our Community Forums and for sending me the build of your Nitro Pro 12 via private message.

Since you are still working with an older build, I highly recommend uninstall the program, rebooting the machine and installing Nitro Pro 12.16.3.574. Please refer to 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 12.16.3.574 using these offline link/s:

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 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!