How can you hide the user name on the logon window?

Normally, when you start your computer the logon window is displayed and the name of the user is shown...

in environments where security is important, you may need to hide the user name.

Run the application regedit.exe and select the following key:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

edit or create (if doesn't exist) the following value:

"DontDisplayLastUserName"="1"