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Dcomcnfg Settings for Excel 2003 on Windows XP

I have a asp.net/c# web application when i try to create the following
excel object using the following code mentioned below

I have Office 2003 installed on my PC, VS.Net 2003. but still it gives the

I get the error

COM object with CLSID {00024500-0000-0000-C000-000000000046} is either not
valid or not registered.

Sample Code of my Web Application

Expand|Select|Wrap|Line Numbers
  2. using Excel=Microsoft.Office.Interop.Excel;
  4. Excel.Application excelApp = null;
  6. try
  7. {
  8. // Instantiate Excel and start a new workbook.
  9. excelApp = new Excel.ApplicationClass();
  10. }
  11. catch( Exception theException )
  12. {
  13. String errorMessage;
  14. errorMessage = "SM Error: ";
  15. errorMessage = String.Concat( errorMessage, theException.Message );
  16. errorMessage = String.Concat( errorMessage, " Line: " );
  17. errorMessage = String.Concat( errorMessage, theException.Source );
  19. Response.Write( errorMessage);
  20. }
The following DCOM config settings i have done
In the Component Services - > Dcom Config ->

Microsoft Excel Application object & {000C101C-0000-0000-C000-000000000046}

I have the following settings

On the General Tab
Authentication level is default

On the Security Tab
I have Given the the Lauch & Access Permissions for the following Users

System, Interactive, EveryOne, Administrators, IUSR_XX, IWAM_XX, ASPNET,
& the
User with which i logon on to the System.

On the Identity Tab

For Excel Application object - I have Selected "The Launching User" radio

For {000C101C-0000-0000-C000-000000000046} object - I have selected "The
System Account (services only)" radio option

With these settings when i launch the Excel using a WinForm C# application
it works fine but not for the web application.

Kindly let me know if you have any suggestions/ideas
Jul 21 '05 #1
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