Open and Close Excel Sheet Not work For Windows 7

private void CreateExcellFile(string submittedFullPath)
        {
Ex.Application exelApp = null;
                        Ex.Workbook exelWorkBook = null;
                        Ex.Worksheet exelWorkSheet = null;
                        object misValue = System.Reflection.Missing.Value;

                        try
                        {
                            ////Create an Excell Application
                            exelApp = new Ex.ApplicationClass();

                            if (exelApp != null)
                            {
                                if (exelApp.Workbooks != null)
                                {
                                    ////Add an Workbook to the current Excell Application
                                    exelWorkBook = exelApp.Workbooks.Add(misValue);
                                }
                            }

                            if (exelWorkBook != null)
                            {
                                ////Getting Sheet1
                                exelWorkSheet = (Ex.Worksheet)exelWorkBook.Worksheets.get_Item(1);

                                if (exelWorkSheet != null)
                                {
                                    //// Naming the Table Data Column
                                    exelWorkSheet.Cells[1, 1] = "Title";
                                    exelWorkSheet.Cells[1, 2] = "FirstName";
                                    exelWorkSheet.Cells[1, 3] = "Surname";
                                    exelWorkSheet.Cells[1, 4] = "Email";
                                    exelWorkSheet.Cells[1, 5] = "TelePhoneNumber";
                                    exelWorkSheet.Cells[1, 6] = "OrderNumber";
                                    exelWorkSheet.Cells[1, 7] = "SubmissionDate";
                                }

                                ////Save the Excell file to its Specified location
                                exelWorkBook.SaveAs(submittedFullPath, Ex.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Ex.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
                            }
                        }
                        catch
                        {
                        }
                        finally
                        {
                            if (exelWorkBook != null)
                            {
                                exelWorkBook.Close(true, misValue, misValue);
                            }

                            if (exelApp != null)
                            {
                                exelApp.Quit();
                            }
                        }

                        this.ReleaseObject(exelWorkSheet);
                        this.ReleaseObject(exelWorkBook);
                        this.ReleaseObject(exelApp);
}

private void ReleaseObject(object submittedObj)
        {
            try
            {
                //// By force realeasing the Object if the Garbage Collector not doing it right now
                System.Runtime.InteropServices.Marshal.ReleaseComObject(submittedObj);
                submittedObj = null;
            }
            catch
            {
                submittedObj = null;
            }
            finally
            {
                GC.Collect();
            }
        }