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Not able to open the password protected PowerPoint 2003 documents using Aspose.Slides for .Net version

Hi, I am using Aspose.Slides.dll version to open the password protected PowerPoint 97-2003 presentation documents. It is throwing "Aspose.Slides.PptxUnsupportedFormatException" with unknown file format error message. This feature is working in the Aspose.Slides.dll for .Net version

Please find the sample code for your reference.

List m_passwordList = new List();
String m_documentFile = "D:\\Aspose Data\\TestPres.pptx";

Presentation presentation = null;

LoadOptions loadOps = new LoadOptions();

foreach (string pass in m_passwordList)




loadOps.Password = pass;

presentation = new Presentation(m_documentFile, loadOps);


} catch {continue; }


return presentation;


Hi Dhivya,

I have observed the requirement shared by you and like to share that we are already working over th issue shared. An issue with ID SLIDESNET-35320 has already been created in our issue tracking system to provide support to load the password protected PPT presentations using Aspose.Slides for .NET. This thread as been linked with the issue so that you may be automatically notified once the issue will be resolved.

We are sorry for your inconvenience,

The issues you have found earlier (filed as SLIDESNET-35320) have been fixed in this update.

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