A forum for questions or concerns related to the PDF-XChange Core API SDK
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When experiencing some errors, use the IAUX_Inst::FormatHRESULT method to see their description and include it in your post along with the error code.
The SetOperationRestriction method sets the restrictions for the runtime, meaning that you cannot save these settings with the document, as the PDF security itself has very limited settings and the https://sdkhelp.pdf-xchange.com/vi ... Encryption method should be used to set it and save it with the document.