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PDF automatically requiring a password/ Activation of Nitro Pro using v9 activation code

Russell Coventry

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Russell Coventry


I have been having trouble in last few weeks where I have been opening PDFs sent to me via NitroPro and they have been requiring passwords to open them.  I know that these files did not have a password on them as others that the PDFs have been sent to have no issue.  I had Nitro Pro v 9 on my computer so I tried to update it.  Would not allow me to do it.  Then tried to Log in to see if that helped - NOPE.  Then uninstalled version 9 and downloaded v12.  I could open the PDFs successfully - GREAT but could not activate the version.  Tried to go through the process whereby it requested I decativate my activation request but could not do it.  Seems to take me round in circles.  Even getting to this forum to make a request was hard work. 


Please help with the activation.  Thanks 





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  • Official Nitronaut

Hello Russell,

Thank you for posting on our Community Forums!

Please note that we no longer support Nitro Pro 9 and its activation servers have been shut down.

We recommend to upgrade to our latest version, V13, which comes with significant stability and security improvements, as well as many feature enhancements, in particular in conversion and OCR functions. To upgrade to Nitro Pro 13, please visit our upgrade page: 
Alternatively, you can upgrade to the latest build of Nitro Pro 12. Per our Sunset Policy, https://www.gonitro.com/nps/product-details/sunset-policy, we have stopped making feature enhancements to version 12 once we released version 13. You can find Nitro Pro 12 installer from the page below and activate it with your current Nitro Pro 9 serial number. 

Please let us know if you need any further assistance.

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