How to Remove All Restrictions from PDF in C#. For more details: https://kb.conholdate.com/total/net/how-to-remove-all-restrictions-from-pdf-in-csharp/

how-to-remove-all-restrictions-from-pdf-in-csharp.cs

using Aspose.Pdf;
using Aspose.Pdf.Facades;

class Program{
static void Main(string[] args) // Remove PDF restrictions in C#
{
        // Set PDF license
        new License().SetLicense("Aspose.Total.lic");

        // Create PdfFileSecurity object
        PdfFileSecurity fileSecurity = new PdfFileSecurity();
        fileSecurity.BindPdf("PrivilegesApplied.pdf");

        // Create DocumentPrivileges object
        DocumentPrivilege privilege = DocumentPrivilege.AllowAll;

        fileSecurity.SetPrivilege(privilege);
        fileSecurity.Save("PrivilegesRemoved.pdf");
    }
}