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Nitro PDF Pro 5, invalid serial number


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I have purchased Nitro PDF Pro backed in 2009, with the email reply contained username, password and serial number.  Never able to install into my PC, got invalid serial number.  I understand that version is old and not supported anymore.  I like to able to install into my PC.  What can I do please?

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  • Official Nitronaut

Hello @wushu2266,

Thanks for reaching out!

Please note, we no longer support Nitro Pro 5.
It has been discontinued as documented in our Sunset Policy: https://www.gonitro.com/nps/product-details/sunset-policy

If you would like to trial our latest product, Nitro Pro 13, you can download it from here: https://www.gonitro.com/pro/try
It will run as a full-featured product for 14 days! After that, if you choose not to purchase it, you can still use it as a PDF Reader.
You can learn all about some of the features here: https://www.gonitro.com/resources/videos


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