Embedded browser and WHMCS


I need to embedd a window from whmcs system to vaadin application. I have managed to do so with following code:

ExternalResource test = null;
test = new ExternalResource(“http://test.server.com/~whmcs/dologin.php?email=” + pEmail + “&timestamp=” + times + “&hash=” + shas + “&goto=” + pGoto);
browser = new Embedded(“”, test);

Basically it uses WHMCS autoAuth service ( http://docs.whmcs.com/AutoAuth ) to make the login and directs into page needed.

However this does not work on internet explorer, It works fine with Firefox and chrome

Does anyone have a clue why so?