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Deactivated Pro 10, now no way to install/activate on new computer

Adam C

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First, it is very frustrating to not be able to get live help with a clear technical issue.

I have a new computer; I deactivated Nitro Pro 10 on old computer, copied serial number and was ready to install Nitro Pro 10 on my new computer.

There is no Nitro Pro 10 download , "free trial" version available on the download resource page, only Pro 11 and Pro 12.  

Tried to install and activate both 11 and 12, neither would accept my activation code, referencing that it was the wrong version activation.

What do I do?  Pro 10 download not available, and 11 and 12 won't accept the activation/serial 3?

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Allain Umailin

Hello @Adam C,

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

Please be informed that customers who didn't purchase VIP Access (formerly Software Assurance), we highly recommend utilizing our Knowledge Base site http://kb.gonitro.com/knowledgebase and you can also post your inquiry to our Community Forums https://community.gonitro.com/ (a page where other customers and Nitro Support team can collaborate and share solutions).

Now to address your concern, kindly uninstall Nitro Pro 11 (or v12) and reboot your system. After rebooting the system, kindly visit this page to download the last build for Nitro Pro 10:


If the page didn't load, visit http://kb.gonitro.com/knowledgebase and search for 'Locating Installer Links for Retail (Online) Customers'.

If you are not sure which to pick, this will help: http://kb.gonitro.com/knowledgebase#/search/64/000001874

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

With regards to activating other versions using your Nitro Pro 10 serial number, you may receive '-22 Error Wrong License Number'. This means the serial number you are trying to activate is for a different version of Nitro Pro.

Thanks for choosing Nitro Pro and I hope this helps!

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