Michael Braecklein Posted December 17, 2023 Report Share Posted December 17, 2023 (edited) First I feel stupid. This web site keeps asking for my Business Email and I am retired and use Nitro for Personal Use since 2022. I have Version 13 since 12/31/2021 when I purchased it. It was on my old computer. I have a new one (Christmas Present to my self ) and I can't Activate Nitro. It says Serial Number does not exist. I need help please. Thank you Michael Braecklein muvwxyzein@yahoo.com Edited December 19, 2023 by Allain Umailin Link to comment Share on other sites More sharing options...
Official Nitronaut Allain Umailin Posted December 19, 2023 Official Nitronaut Report Share Posted December 19, 2023 Hello @Michael Braecklein, Thank you for reaching out to us through our Community Forums! The error that you are receiving is commonly caused by installing a different version of Nitro PDF Pro. To fix this, kindly uninstall your current Nitro Pro through Control Panel\Programs\Programs and Features and reboot your machine. Then please download Nitro PDF Pro 13 using these links: x64 https://downloads.gonitro.com/professional_13.70.7.60/en/vlp/nitro_pro13_x64.msi x32 https://downloads.gonitro.com/professional_13.70.7.60/en/vlp/nitro_pro13_x86.msi To know if you have a 32-bit or 64-bit Windows system, please refer to this article: https://support.microsoft.com/en-ph/help/15056/windows-32-64-bit-faq You can now activate your copy of Nitro PDF Pro by going to the Help tab > About Nitro Pro > Activate, entering your serial number 504955-uvwxyz781978, and clicking Activate. Thank you for choosing Nitro and I hope this helps. Link to comment Share on other sites More sharing options...
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