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Asked: 2026-05-28T14:03:04+00:00

In a Windows Forms application I’m saving some data to an Excel file. Until

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In a Windows Forms application I’m saving some data to an Excel file.
Until now, i was using Excel 2003 and saving as the file as xls. with this code :

exportFile.SaveAs(strPath, Excel.XlFileFormat.xlWorkbookNormal, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlShared, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

I’ve upgraded to Excel 2007 and now I want to save the data as xlsx, so i’ve changed the same line to :

exportFile.SaveAs(strPath, Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

But now, i get an exception on that line , “Exception from HRESULT: 0x800A03EC”
Do you have any idea what am i doing wrong ?

Thank you!

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1 Answer

  1. Editorial Team

    I’ve tried @david heffernan’s solution and worked.
    XlSaveAsAccessMode.xlNoChange did the trick

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