Respected Sir,
We are using urn:schemas-microsoft-com:office:spreadsheet for opening Excel file.
But after adding the <add name="X-Content-Type-Options" value="nosniff" /> in IIS, download Excel File option is not displayed, instead it displays whole XML text content in aspx page while clicking on download page.
Could you please help on this as this is URGENT for us to deliver.
Regards,
Venkat