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Asked: 2026-05-14T15:31:28+00:00

When I try to instantiate a PDF browser control like this in C#: AcroPDFLib.AcroPDFClass

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When I try to instantiate a PDF browser control like this in C#:

AcroPDFLib.AcroPDFClass acrobat = new AcroPDFLib.AcroPDFClass();

I get a COMException with this message:

Creating an instance of the COM component with CLSID {CA8A9780-280D-11CF-A24D-444553540000} from the IClassFactory failed due to the following error: 80004005.

I have made a reference to AcroPDF.dll which has the component name Adobe Acrobat 7.0 Browser Control Type Library 1.0.

When I run Visual C# 2008 Express Edition as administrator I get another error message:

Unable to cast COM object of type ‘AcroPDFLib.AcroPDFClass’ to interface type ‘AcroPDFLib.IAcroAXDocShim’. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{3B813CE7-7C10-4F84-AD06-9DF76D97A9AA}’ failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).

This happens at the next line when I try to use the object:

acrobat.LoadFile("book.pdf");

I can’t figure out what is wrong. Help most appreciated!

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1 Answer

  1. Editorial Team

    These are the steps to use the Adobe PDF Reader control:

    1. Create a new Windows Forms Application: File → New Project… → Windows Forms Application → OK
    2. Add a reference to the Adobe Acrobat 7.0 Browser Control Type Library 1.0: Project → Add Reference… → COM → Adobe Acrobat 7.0 Browser Control Type Library 1.0 → OK
    3. Add the Adobe PDF Reader control to the Toolbox: Tools → Choose ToolBox Items… → COM Components → Adobe PDF Reader → OK
    4. Drag an Adobe PDF Reader control from your toolbox into the Form

    I’m not sure why but I have to run Microsoft Visual C# 2008 Express Edition with administrative privileges to get this working. With a limited user I get this message in the designer:

    Error HRESULT E_FAIL has been returned from a call to a COM component.

    Note that after adding the Adobe PDF Reader control to your toolbox a new .NET interop assembly has been created with the name AxInterop.AcroPDFLib.dll. A reference to this new assembly has been added to your project references.

    API reference documentation for the Adobe PDF Reader control is located here: http://icio.us/ajukkr

    This forum thread provides some more useful information: http://forums.adobe.com/thread/438362

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