A simple script you can add to your master page or content editor etc. to hide the “Sign in As a Different User” option that is available in the Personal Actions Menu. <script src="/jQuery/jquery-1.4.1.js" type="text/javascript">&... <script type="text/JavaScript"> jQuery(document).ready(func... { var objects = document.getElementsByTagNa... for (var i = 0; i < objects.length; i++) { itm = objects[i]; if (('#' + itm.id).indexOf("LoginAsDif... ......