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Failed Activation on New Computer

Russ Marshall

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Russ Marshall

Tried to Activate Nitro Pro 13 on new computer today, after deactivating the prior activation. Keep getting -20: Error - Invalid License Number. I have 2 activations and have only installed once prior and far less than a year ago. 

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  • Official Nitronaut

Hello @Russ Marshall

Thanks for your message - I'm happy to assist you.

The error message -20 means that the serial number you are trying to activate is for a different version of Nitro Pro.

Please uninstall what you have and get the correct version 13 installer from the page below:

After installation, activate with your serial number.

Please let me know how you go.

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