Due to a recent Microsoft patch which has eliminated certain features from the Internet Explorer browser, all users to your web site using the most recent version of Internet Explorer will not be able to login through any HTTP login forms. It is recommended that you either place the “Using I.E.” checkbox on the login form or that you redirect users to the actual protected folder(s) and allow them to login using the standard htaccess pop-up login screen. More information can be found by clicking here.