Regarding Licencing of PDF Viewer

PDF-XChange Viewer SDK for Developer's
(ActiveX and Simple DLL Versions)

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Regarding Licencing of PDF Viewer

Post by Rama » Thu Jan 25, 2018 9:00 pm


I am currently using older version of PDF-Viewer.exe and having some issues with that. To avoid this, i tried upgrading to newer version and got water mark saying "Demo version" on the PDF's. Do i need to specify different SetDevInfo values for the newer version?

Is that info changes with every new version of PDF-Viewer.exe.

I am talking about the X and Y values that we submit in below code through C#

_AxViewer.SetDevInfo(X, Y);

Please let me know if you need more information.


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Tracker Supp-Stefan
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Re: Regarding Licencing of PDF Viewer

Post by Tracker Supp-Stefan » Fri Jan 26, 2018 1:48 pm

Hello Rama,

Yes the newer builds will most likely expect a different serial number.
Please write to with your current license key or the order number, so that we can check it for you and advise of the possible solutions.

Please do not share any license info here in the public forums!


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