Need serial number after updating.

[Ed K]

   I've been using nitro pro since last November.  I installed an update to fix  persistent error message 401.  The download that installed now says the installation is a trial.  I can't find the email that has my serial number (which I had copied to my clipboard but was erased when I restarted).  Please help. 

[Allain Umailin]

Hello @Ed K,

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

I am afraid I am unable to find a purchase under your email address.

In order to help you with your request, could you please provide the following information for me?

-The full name and address of the purchaser
-The email address used to purchase Nitro Pro.

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. 

[Ed K]

I replied by DM.  Not sure where to go from here.

[Allain Umailin]

Hello @Ed K,

Thank you for the private messages.

After checking the serial number, our records show it is for Nitro Pro 12, not for version 13 so please refer to these steps:

1. Clear the content of the directory under C:\users\your_username\Appdata\local\temp. For whatever reason, not all temp files automatically remove themselves and is NOT usually caused by Nitro Pro files. Kindly note Appdata folder is hidden and to unhide it, please refer to this article https://cybertext.wordpress.com/2012/05/29/cant-see-the-appdata-folder/ 

2. Download and run our Clean Up utility to uninstall your Nitro Pro 13.19:  http://install.nitropdf.com/professional_13400811/install-cleanup/install-cleanup.zip

3. 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.

4. Download and install Nitro Pro 12.16.9.574 using below offline installers:

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 

5. After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering your serial number 23460x-xxxxxx-x83102

Thank you for choosing Nitro and I hope this helps.