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License key missing - can't activate install on desktop

Mike Todd

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I have a working copy of Nitro 12 on my laptop, but the About tab does not show a serial number. I recently resurrected my desktop' which had an operating copy of Nitro 12. This installation is not able to be activated after upgrades to both Windows 10 and other software. These are the only two installations. My efforts included going through the FAQ and this online forum. The records from Cleverbridge show I've used Nitro starting with v6. Your help and suggestions for resolving this problem would be greatly appreciated. 


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  • 8 months later...


Thank you for your help earlier this year. Now a different problem.

The serial number works for Nitro Pro 12. However, while checking on upgrading to Nitro Pro 13, the message is "We were unable to validate your serial number. Please ensure you entered it correctly. "

What is the process for checking the eligibility?


Mike Todd


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  • 1 month later...

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