STEPS:-

Click Start, type gpedit.msc and press Enter

Go to the following location:

Local Computer Policy | Administrative Templates | System | Logon

Set Hide entry points for Fast User Switching to Enabled

Quit the Group Policy Editor.

Name:  Windows Vista  Disabling Fast User Switching.jpg
Views: 698
Size:  23.7 KB

To enable appropriate policy and administrative users to switch to hide the buttons, the Start menu and user interface, log on with the Task Manager. Note that if there is a particular version of Windows Vista. Instead, configure the settings to meet the secretary.