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();
m using fw 4.0 and its a webapplication