How do I convert doc to pdf in ASP.NET web application

Question

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I am getting the following error while using the Interop word dll for converting the Word to PDF.

C#

Error Converting DOC To PDF12066_Parameter.docx Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

Please suggest solutions ASAP.

What I have tried:

string strFileName = "";
strFileName = fuSrc.PostedFile.FileName.ToString();
Application appWord = new Application();
Document wordDocument = appWord.Documents.Open(strFileName);
txtDst.Text = strFileName.Replace(".docx", ".pdf").Replace(".doc", ".pdf");
try
{
wordDocument.ExportAsFixedFormat(txtDst.Text, WdExportFormat.wdExportFormatPDF);
lblErr.Text="Converted Successfully";
}
catch (Exception ex)
{
lblErr.Text=ex.Message.ToString();
}

Posted 1-Jun-16 4:24am

S.Prasath

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Comments

Richard Deeming 1-Jun-16 11:32am

Read the following Microsoft knowledgebase article:

Considerations for server-side Automation of Office[^]
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.

There are various hoops you'll have to jump through to stand any chance of getting Office Interop working from ASP.NET; and even if you do manage to get it working, there's no guarantee that it won't stop working at some random point in the future.

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