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Will Not Allow Activation NP 12 On New PC


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Lost my old PC with NP 12 installed. Had to install NP 12 on new Win 10 PC with my valid serial number. Followed the "deactivation" steps - says there are Zero Activated. But I still get -23 Error license already used. So I am stuck using the Acrobat Reader, and since I am not VIP,  no tech support.

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  • Official Nitronaut
Allain Umailin

Hello @LRLong,

Thank you for reaching out to us through our Community Forums!

I just made an adjustment on your license, so you can now activate your copy of Nitro Pro by going to Help tab > About Nitro Pro > Activate, entering your serial number and clicking Activate.



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