MS CRM 2011 Roll-up 12 - IE10 - ActiveXObject("Msxml2.DOMDocument") is not supported anymore

If you are using ActiveXObject("Msxml2.DOMDocument") or trying to get the XML results and use XmlDoc.selectNodes running a FetchXML after upgrading to IE10 the code will break.

Sample:

We used to be able to pass a FetchXML to this function and get "workflowid" which then we were running the dialog box for the user.

Old Code looked like this:

//This is the FetchXML code to extra the live guids of the workflows
function Fetch(xml) {
    var Xml = ""
    Xml += GenerateAuthenticationHeader()
    Xml += "";
    Xml += "";
    Xml += "";
    Xml += FetchEncode(xml); // Microsoft _HtmlEncode function  
    Xml += "";
    Xml += "";
    Xml += "";
    Xml += "";
    var XmlHttp = CreateXmlHttpObject(); // Microsot CreateXmlHttp function  
    XmlHttp.open("POST", "/mscrmservices/2007/crmservice.asmx", false); //Sync Request  
    XmlHttp.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
    XmlHttp.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/crm/2007/WebServices/Fetch");
    XmlHttp.send(Xml);

    var XmlDoc = new ActiveXObject("Msxml2.DOMDocument");
    XmlDoc.async = false;
    XmlDoc.resolveExternals = false;
    XmlDoc.loadXML(XmlHttp.responseXML.text);

    var resultRecords = XmlDoc.selectNodes("//workflowid");
    return resultRecords[0].text;
}

Upgrading to IE10 and we have noticed the selectNodes function returns null. Here is a way we have temporarily replaced the funtionlity by using a JQuery call and pass the SOAP message to the 2007 endpoint:

//This is the FetchXML code to extra the live guids of the workflows
function Fetch(xml) {

    var Xml = ""
    Xml += GenerateAuthenticationHeader()
    Xml += "";
    Xml += "";
    Xml += "";
    Xml += FetchEncode(xml); // Microsoft _HtmlEncode function  
    Xml += "";
    Xml += "";
    Xml += "";
    Xml += "";

    // the code has been Modified in regards to compatibility issue with IE10
    // The end point needs to be replaced with 2011 version and the following with OData call
    var soapURL = "/mscrmservices/2007/crmservice.asmx" 

    var returnValue;

    $.ajax({
        type: "POST",
        contentType: "text/xml; charset=utf-8",
        datatype: "xml",
        async: false,
        url: soapURL,
        data: Xml,
        beforeSend: function (XMLHttpRequest) {
            XMLHttpRequest.setRequestHeader("Accept", "application/xml, text/xml, */*");
            XMLHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
            XMLHttpRequest.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/crm/2007/WebServices/Fetch");
        },
        success: function (data, textStatus, XmlHttpRequest) {
            var resp = $.parseXML($(XmlHttpRequest.responseXML).children().find('FetchResult')[0].textContent).childNodes[0];
            if (resp != null && resp.childNodes[0] != null && resp.childNodes[0].childNodes[0] != null)
            {
                returnValue = resp.childNodes[0].childNodes[0].textContent;
                //$.parseXML($(XmlHttpRequest.responseXML).children().find('FetchResult')[0].textContent).childNodes[0].childNodes[0].childNodes[0].textContent
            }
            else
            {
                alert("failure unable to perform this action.");
                returnValue = "failure";
            }
        },
        error: function (XMLHttpRequest, textStatus, errorThrown) {
            returnValue = 'failure' + errorThrown;
            alert("failure " + errorThrown);
        }
    });

    return returnValue;
}