Problem now was that the parseXML method doesn't take ie9/ie10 into consideration. This is the new parseXML that I concocted. The problem that now arose was that the converter method was still pointing to the old parseXML method so I had to add a few more lines updating the converters object.
If you know of a better solution please comment below.
$.parseXML = function ( data ) { var xml, tmp; if ( !data || typeof data !== "string" ) { return null; } try { if ( window.DOMParser && navigator.userAgent.indexOf("MSIE 9") == -1 && navigator.userAgent.indexOf("MSIE 10") == -1) { // Standard tmp = new DOMParser(); xml = tmp.parseFromString( data , "text/xml" ); } else { // IE xml = new ActiveXObject( "Microsoft.XMLDOM" ); xml.async = "false"; xml.loadXML( data ); } } catch( e ) { xml = undefined; } if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) { jQuery.error( "Invalid XML: " + data ); } return xml; } $.ajaxSetup({ converters:{"* text": window.String, "text html": true, "text json": jQuery.parseJSON, "text xml": $.parseXML} })