Activex cannot use dll on Vista OS RRS feed

  • Question

  • Hi,

    We have developed an ActiveX control that uses a Signature Library to sign pdf files with digital signatures. Certificate that hold signatures are kept in smartcards (We use Siemens Card OS API) connected to USB. We have no problem in using that ActiveX control in XP OS. However when using in Vista, ActiveX control cannot load Siemens CARD OS API Dll (Siecap11.dll). The same code works without any problem in a desktop application. We turned off UAC which did make no sense. That must be something with the security permissions of Internet Explorer or Vista.

    Do you have any idea on how to overcome this issue?

    Wednesday, July 29, 2009 3:02 PM