How to Disable Display Last User Name who Logged In On Windows Logon Screen

Windows Vista, Windows 7 and Windows Server, is designed in a way that the last user who logged into the system is remembered, and is displayed automatically on next log in, so that user has to just enter the password to log on.

Windows provides a registry or group policy trick that instruct Windows not to remember and display the last user name who logged in. Follow the steps below to tweak the registry setting or group policy:

1. Run Registry Editor (RegEdit).
2. Navigate to the following registry key:
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
3. In the right pane, double click on DontDisplayLastName registry key value, and set its value data to1.

Alternatively, the registry key above can be changed and modified via Local Security Policy Editor, as shown in guide below.

1. Click on Start button, and type secpol.msc into Start Search box, and hit Enter to open the Local Security Policy Editor.
2. Navigate to Security Settings -> Local Policies -> Security Options.
3. In the right pane, double click on Interactive Logon: Do not display last user name.
4. Select and set the radio button of Enabled.