ASP.net excel export functionality not working in windows 10

Question

Hi ,

string strCode;
            strCode = "ExcelReport.xls";
            string attachment = "attachment; filename=" + strCode;
            Response.ClearContent();
            Response.AddHeader("content-disposition", attachment);
            Response.ContentType = "application/ms-excel";
            StringWriter sw = new StringWriter();
            HtmlTextWriter htw = new HtmlTextWriter(sw);
            tblExport.RenderControl(htw);
            Response.Write(sw.ToString());
            Response.End();

The above code is working fine with windows 2007 ,but not in windows 10 which have Office365.

Can you please assist here.