Ian Ross Posted January 21, 2023 Report Share Posted January 21, 2023 Hi I installed 1 instance of Nitro Pro 12 on 1 computer. Worked fine. Showed 1 of 2 activations used. Tried on another computer - "Serial Number does not Exist" Please Help. Link to comment Share on other sites More sharing options...
Official Nitronaut Leslie V Posted January 23, 2023 Official Nitronaut Report Share Posted January 23, 2023 Hello Ian, The error message means version 13 is installed and not version 12. Please install the latest Nitro Pro 12 update (12.16.9.574) so you can reactivate successfully: https://www.gonitro.com/nps/product-details/downloads Then activate with your Nitro Pro 12 serial number. I hope this helps! Link to comment Share on other sites More sharing options...
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