Error While Creating Excel File In C# Web Application?

Feb 24, 2011

i am getting following error while creating the excel file


System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005(E_ACCESSDENIED)). at QA.CreateExcel.createDoc() in e:~~CreateExcel.cs:line 33

i am using this code.

private Office.Excel.Application app =new Office.Excel.Application();

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