Danielle Shaw Posted April 6, 2021 Report Share Posted April 6, 2021 My hard drive crashed on the computer and had to reinstall Nitro. I get the -20: Error-Invalid License Number when I try to activate the license. Link to comment Share on other sites More sharing options...
Official Nitronaut Allain Umailin Posted April 6, 2021 Official Nitronaut Report Share Posted April 6, 2021 Hello @Danielle Shaw, Thank you for reaching out to us through our Community Forums! To continue offering our customers the very best PDF tools, we have upgraded our servers and has shutdown the one your older version of Nitro Pro runs on so please install Nitro Pro 12.16.9.574 using below direct MSI links: 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 After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering the same serial number. Thank you for choosing Nitro and I hope this helps. Link to comment Share on other sites More sharing options...
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