Issues with IE8 and SharePoint Datasheet View
April 11, 2019 By Paul Swider
If you experience compatibility issues with SharePoint sites and IE8 or issues with the datasheet view in IE8 try following the instructions in this MSDN article.
We can implement a very common document compatibility mode, EmulateIE7, supported by Windows Internet Explorer 8, on a per-site basis, using custom headers in Internet Information Services (IIS).