修改sharepoint 服务器上下面路径中的Welcome.ascx文件：

C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\TEMPLATE\CONTROLTEMPLATES



增加一段代码如下：


         <SharePoint:MenuItemTemplate runat="server" ID="ID_LoginAsDifferentUser"

                 Text="<%$Resources:wss,personalactions_loginasdifferentuser%>"

                 Description="<%$Resources:wss,personalactions_loginasdifferentuserdescription%>"

                 MenuGroupId="100"

                 Sequence="100"

                 UseShortId="true"

                 />



这段代码添加在下面标记之前：