A component of the Windows operating system that provides interactive logon support. Winlogon is designed around an interactive logon model that consists of three components: the Winlogon executable, a Graphical Identification and Authentication dynamic-link library (DLL) referred to as the GINA, and any number of network providers. Windows Me/98/95: Winlogon is not supported. <br><br> *<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secgloss/security/security_glossary.asp " target=_blank>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secgloss/security/security_glossary.asp </a>