A multiple user desktop graphical identification and authentication configured as a loadable dynamic link library (DLL) intended to replace the default Microsoft graphical identification and authentication. It has the ability to create secure, private logon sessions for each user that logs on to the system. There can be up to at least thirteen users logged in at the same time and each user will have their own desktop environment. Auto log off functions may be set based on time of inactivity and/or number of individual users. The multiple user desktop graphical identification and authentication functions in a domain and non-networked environments and needs no added hardware.