Cross domain event from https to http by AJAX (To Windows service)

Question

I have a site on HTTPS which runs only on Internet Explorer (Because it's based on Silverlight) and previously it was on HTTP and I had a POS device which I used to send AJAX requests to initiate its Windows service.
Everything was working fine until HTTPS came up.

Problem when I request to initiate service which request would be like this:

function InitiateService(apiUrl, myJSON) {
    console.log("JSONToInitiateService: ", myJSON);
    $.ajax({
        type: "POST",
        contentType: "application/json",
        data: null,
        url: apiUrl + "/InitiateService1",
        dataType: 'json',
        data: myJSON,
        success: function (result) {
            console.log("initiate servise result: ", result);
        },
        error: function (result) {
            console.log("initiate servise result: ", result);

        }
    });


}

and everything is same as before.

it returns:

[object Object]{readyState: 0, status: 0, statusText: "No Transport"}

and then I found 'No Transport' Error w/ jQuery ajax call in IE and I added:

$.support.cors = true; to function and crossDomain: true, to AJAX request.

Now it's saying error objects

I run Internet Explorer as administrator.

and I read CORS - cross domain POST to HTTP from HTTPS, but there weren't any valid answers.

and IIS Server manager doesn't have any certificates so certificates shouldn't be the problem.

Questions

• By different pages, I couldn't induct that it's possible or not (based on same origin policy) to send AJAX request from HTTPS page to HTTP service?

• If it's possible then without changing HTTP service how I can solve the problem?

now I found out, I can't use CORS (based on this article):

The server must support CORS and signal that the client’s domain is allowed to do so.