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Hello @Patrick Morris, Thank you for reaching out to us through our Community Forums! Before continuing, please be aware that Nitro Pro 11 or older are already discontinued as documented in our Sunset Policy: https://www.gonitro.com/support/sunset-policy . With that, support for the discontinued versions are no longer available. If you are interested in upgrading your license to Nitro Pro 13 with a discounted rate, kindly access our Upgrade Portal and enter your Nitro Pro 11 serial number: https://www.gonitro.com/pro/upgrade You may also want to purchase Nitro VIP Access

I am trying to activate on a new computer after my old computer died. Im using the correct version of nitro pro but when i go to activate I get the error 24 message and no options to do anything else. The trouble shooting page for this error did not have a solution.

Hello @lisa doris, Thank you for reaching out to us through our Community Forums and our sincere apologies for the inconvenience. We had a minor outage and our cloud engineering team was able to address this few moment ago. Could you please try again requesting signatures and upload any documents to you Nitro Sign? How did it go? Thank you very much in advance and I am looking forward to hearing back from you.

Thank you - it took a while but now is working

Thank you for your help. The link you provided for me to download fixed the issue.

my document won't load - keeps spinning. Very frustrating that there is no easy way to get help or submit a ticket.

Much appreciated. I installed it, and so far so good! Thank you!

Hello @Steven Martin, Thank you for reaching out to us through our Community Forums! As a courtesy of being a valuable customer of Nitro, we want to make you aware of the change to your product that may affect its activation performance (e.g. -20: Error - Invalid license number). 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_pro1

Hello Joel, Thank you for your message - I can help you out. Please note, we no longer support Nitro Pro 11. It has been discontinued as documented in our Sunset Policy: https://www.gonitro.com/nps/product-details/sunset-policy You can either upgrade to Nitro Pro 13: https://www.gonitro.com/pro/upgrade Or install the latest Nitro Pro 12 update so you can continue using your purchased license: https://www.gonitro.com/nps/product-details/downloads Then activate with your Nitro Pro 11 serial number. I hope this helps. Let me know if you require anything else.

Hello @Trina Forno Thank you for your message - I can help you out. You have an old version 13 build. Please install the latest Nitro Pro 13 update: https://www.gonitro.com/nps/product-details/downloads Then activate with your Nitro Pro 13 serial number. I hope this helps. Let me know if you require anything else.

Hello Bob, Thank you for your message - I can help you out. Please note, we no longer support Nitro Pro 9. It has been discontinued as documented in our Sunset Policy: https://www.gonitro.com/nps/product-details/sunset-policy You can either upgrade to Nitro Pro 13: https://www.gonitro.com/pro/upgrade Or install the latest Nitro Pro 12 update so you can continue using your purchased license: https://www.gonitro.com/nps/product-details/downloads Then activate with your Nitro Pro 9 serial number. I hope this helps.

Hello @Pepper Chastain Thanks for your message - I'm happy to assist you. So that we can troubleshoot the problem, please provide me with the following: - The file you are printing so we can test - What exact version of Nitro you are using (You can retrieve this information by going to the Help tab> About Nitro Pro.) - The exact steps you are taking - A screen shot of what you are seeing or any error message you are receiving I look forward to your response.

Hello Suzanne, We will reach out to you directly via the support ticket. Cheers!

Hello @Anthony Little, Thank you for reaching out to us through our Community Forums and our sincere apologies for this inconvenience. To further troubleshoot this rare activation issue, please refer to these steps in order to install the latest build for version 12: 1. Clear the content of the directory under C:\users\your_username\Appdata\local\temp. For whatever reason, not all temp files automatically remove themselves and is NOT usually caused by Nitro Pro files. Kindly note Appdata folder is hidden and to unhide it, please refer to this article https://cybertext.wordpress.

Hello Paul, Please send me some screenshots of your steps and the error message so we can check where the error message might be coming from. Looking forward to your reply.

Hello Brenda, Please install the latest Nitro Pro 12 update so you can activate successfully. Note, that it should be version 12, not 13: https://www.gonitro.com/nps/product-details/downloads Then activate with your Nitro Pro 12 serial number. I hope this helps. Let me know if you require anything else.

Hello @Wayne Stoughton I sent you a direct message. Cheers!

Hello @Logan Verner, Thank you for reaching out to us through our Community Forums! Did the affected machine installed a major Windows Update prior to this issue? If yes, kindly note upon the upgrade of the operating system or installing a major Microsoft update, the Computer ID is changed, as it is comprised partially by the operating system. Once changed, this will no longer recognize the original installation causing the program to revert to trial mode. As a courtesy of being a valuable customer of Nitro, we want to make you aware of the change to your product that may affect

Hello @Blaine Eaddy We have created a support ticket so we can assist you directly. Cheers!

Hello @Madeline Halloway, Thank you for reaching out to us through our Community Forums! We are pleased to inform you that we have released a recent update that addresses the 'Error 401' issue so kindly update to our latest build by downloading our direct installers below: x32 http://install.nitropdf.com/professional_13381739/en/retail/nitro_pro13_ba_x86.msi x64 http://install.nitropdf.com/professional_13381739/en/retail/nitro_pro13_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-

Hello @Jonathan Piña, Thank you for reaching out to us through our Community Forums! In order to further assist you, could you please provide the serial numbers of your Nitro Pro 10? To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. This matters because our business installers are different from the online ones. Thank you very much in advance and I am looking forward to hearing back from you.

Hello @Robert Glidewell, Thank you for reaching out to us through our Community Forums! In order to further assist you, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab? This window should show the exact build of the program and its serial number (format is 13.X.X.X, e.g. 13.2.3.26). Lastly, could you please provide the serial number of your Nitro Pro you are having issue activating? To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. Thank you very much in advance and I am looking f

Hello @Shonnie Lavender, Thank you for reaching out to us through our Community Forums! In order to further assist you, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab? This window should show the exact build of the program and its serial number (format is 12.X.X.X, e.g. 12.0.0.112). Lastly, could you please provide the serial number of your Nitro Pro 12? To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. This matters because our business installers are different from the online o

Hello @Wilma, Thank you for reaching out to us through our Community Forums! We are pleased to inform you that we have released Nitro Pro 13.8.2.140 that addresses this error message so kindly update using below direct installers for the most updated build: x32 http://install.nitropdf.com/professional_13381739/fr/retail/nitro_pro13_ba_x86.msi x64 http://install.nitropdf.com/professional_13381739/fr/retail/nitro_pro13_ba_x64.msi After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering your serial nu

I am having a similar issue. Got a new computer. Erased the old computer before I knew I was supposed to deactivate software. Online deactivation is not working. Any help is appreciated. error code -24 when try to active in the software.