Internet Explorer的10无视XMLHtt prequest'xhr.withCredentials =真正的'

我目前有一个问题，跨域Ajax调用使用IE10（在IE10模式，不兼容）。

I’m currently having an issue with a cross-domain ajax call using IE10 (in IE10 mode, not compatibility).

情况： 我有两个域，的http：//一个和的http：// B 。我对 HTTP cookie中集：// B 。我目前网页的http：//一个

Situation: I have two domains, http://a and http://b. I have a cookie set for http://b. I am currently on page http://a.

我希望做一个CORS请求的http：// B 使用XMLHtt prequest（这应该工作，根据http://blogs.msdn.com/b/ie/archive/2012/02/09/cors-for-xhr-in-ie10.aspx),与包括在请求中的cookie。 该JS如下：

I want to do a CORS request to http://b using XMLHttpRequest (which should work, according to http://blogs.msdn.com/b/ie/archive/2012/02/09/cors-for-xhr-in-ie10.aspx), and include the cookie in the request. The JS is as follows:

var xhr = new XMLHttpRequest();
xhr.open('GET', 'http://b', true);
xhr.withCredentials = true;
xhr.send();

此应该确保该cookie附加到请求;然而，菲德勒跟踪显示没有cookie被连接，我也得到 401：访问被拒绝

This should ensure that the cookie is attached to the request; however, the Fiddler trace shows that no cookie is attached, and I get 401: Access Denied.

该服务器配置了CORS的工作，它包含Access-Control头：

The server is configured to work with CORS, it includes the Access-Control headers:

Access-Control-Allow-Origin: http://a
Access-Control-Allow-Credentials: true

（这应该没有什么差别，因为没有股权preflight请求，而第一个请求IE将是一个GET，和小甜饼并不是present，从而导致401）。

(this should not make any difference, since there is no OPTIONS preflight request, and the first request IE sends is a GET, and the cookie is not present, thus causing a 401).

此外，JS代码段工作正常在Firefox和Opera。

Furthermore, the JS snippet works fine in both Firefox and Opera.