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To Logon or Not to Logon

There have been a few customers asking how they can prevent the Ctrl+Alt+Delete splash screen from being displayed on start. A simple "fix" would be to change the value of the following registry key:

HKLM\Software\Microsoft\Windows\CurrentVersion\policies\sytem\DisableCAD <>

Set this value to 1 and the "Log on to Windows" dialog box will be suppressed.

The login functionality in Windows is controlled by msgina.dll, which is owned by the Windows Logon (Standard) component. Many customers prefer to write their on logon interface that aligns with their application. For in-depth information on the GINA (Graphical Identification and Authentication) see this security article about creating your own GINA, as well as this article on customizing Winlogon behavior.  

-Lynda

Comments

  • Anonymous
    March 23, 2006
    Just as long as people keep in mind that writing one's own GINA won't be supported in Vista and beyond.  (Assumably this applies to embedded versions of Vista as well.)
  • Anonymous
    March 30, 2006
    The Ctrl+Alt+Delete requirement is a little difficult when you are running a touch screen configuration without an external keyboard.  Unless there is another way around this with a touch screen that I'm missing, Microsoft needs to come up with an easier change option.
  • Anonymous
    March 30, 2006
    The comment has been removed
  • Anonymous
    March 31, 2006
    John,

    Are you using Autologon with your touch screen configuration, so that Ctrl+Alt+Delete is never required?

    Lynda
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