Whoever works on this needs to have both IE10 and IE11.

The following function:

function testUsingActiveX(version) {
    //var objectName = 'JavaWebStart.isInstalled.' + version + '.0';
    var objectName = 'JavaWebStart.isInstalled';

    // we need the typeof check here for this to run on FF/Chrome
    // the check needs to be in place here - cannot even pass ActiveXObject
    // as arg to another function
    if (typeof ActiveXObject == 'undefined' || !ActiveXObject) {
        log('[testUsingActiveX()] Browser claims to be IE, but no ActiveXObject object?');
        return false;
    }

    try {
        return (new ActiveXObject(objectName) != null);
    } catch (exception) {
        return false;
    }
}

in dtjava.js (and deployJava.js) does not work under IE11. The behavior of the typeof operator is different for these two web browser platforms. We also don't detect IE11 from what I can tell.

Here is a stack overflow question about the difference between IE10 and IE11:
http://stackoverflow.com/questions/19638981/window-activexobject-difference-in-ie11

Attached is a test.html file as a reduce test case. It isn't complete, but it is a place to start.

Also note that JavaWebStart.isInstalled COM Object is located under Computer\HKEY_CLASSES_ROOT and there is one for each version installed which is they the function takes a version number.