Error generating excel file

When the system runs on the server this error occurs: ERROR:

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)).

There are other systems on the same server that do not give error, this is the error generated:

Onmymachineitworksperfectly,thisisthecodethatgeneratestheexcelfile:

protectedvoidTESTE_GerarExcel(){#region::GERARARQUIVOEXCEL::varexcelApp=newExcel.Application();excelApp.Workbooks.Add();Excel._WorksheetworkSheet=(Excel.Worksheet)excelApp.ActiveSheet;workSheet.Cells[1,"A"] = "NOME CLIENTE";
            workSheet.Cells[1, "B"] = "DESCRIÇÃO";
            workSheet.Cells[1, "C"] = "QTDE PARCELA";
            workSheet.Cells[1, "D"] = "VALOR PARCELA";
            workSheet.Cells[1, "E"] = "DATA VENCIMENTO";
            workSheet.Cells[1, "F"] = "SITUAÇÃO";
            workSheet.Cells[1, "G"] = "BOLETO ENVIADO";
            var row = 1;

            row++;
            workSheet.Cells[row, "A"] = "IND. FARMACÊUTICA";
            workSheet.Cells[row, "B"] = "ALUGUE DE SALA";
            workSheet.Cells[row, "C"] = "2";
            workSheet.Cells[row, "D"] = "200,10";
            workSheet.Cells[row, "E"] = "30/05/2016";
            workSheet.Cells[row, "F"] = "PENDENTE";
            workSheet.Cells[row, "G"] = "NÃO ENVIADO";


            workSheet.Columns[1].AutoFit();
            workSheet.Columns[2].AutoFit();
            workSheet.Columns[3].AutoFit();
            workSheet.Columns[4].AutoFit();
            workSheet.Columns[5].AutoFit();
            workSheet.Columns[6].AutoFit();
            workSheet.Columns[7].AutoFit();

            workSheet.Range["A1", "G1"].AutoFormat(Excel.XlRangeAutoFormat.xlRangeAutoFormatSimple);


            excelApp.Columns.AutoFit();

            string nome = "Contas_a_Receber_" + System.DateTime.Now.ToString().Replace(" ", "_").Replace("/", "_").Replace(":", "_");

            var path = Path.Combine(Server.MapPath("~/Content/Uploads"), nome);

            excelApp.ActiveWorkbook.SaveCopyAs(path + ".xlsx");

            #endregion

        }