System.ApplicationException - Open PDF document using Aspose.PDF

I’m getting an error when trying to open a PDF with the error message:

An unhandled exception of type ‘System.ApplicationException’ occurred in Aspose.PDF.dll

Additional information: No issuing authority was found

Simple code of Document doc = new Document(pdf);

What’s the reason for this message? See attached

doc.pdf (25.3 KB)



Thank you for contacting support.

We have been able to reproduce the issue in our environment. A ticket with ID PDFNET-47232 has been logged in our issue management system for further investigation and resolution. The ticket ID has been linked with this thread so that you will receive notification as soon as the ticket is resolved.

We are sorry for the inconvenience.

Hi there,

Any updates to this?


Please note that the issue has been logged under free support model and will be investigated on first come first serve basis. Therefore, it may take some months to resolve. As soon as we have some definite updates regarding ticket resolution, we will let you know.

Moreover, we also offer paid support model where issues are resolved on urgent basis and have priority over the issues logged under free support model. You may check our Paid Support options for your reference.