Many users are able to share the same computer. Their individual Windows identities allow them to keep their files completely private and to customize the operating system with their own preferences. Windows manages these separate identities, or accounts, by giving each user a unique user name and password. When a user selects an account and types a password (if necessary), Windows starts with that user’s configuration settings and network permissions. When you want to change users, you can log off, (which closes all running programs, saves your settings, and signs you off the computer) or switch users, which quickly switches between users without having to close programs and saves your current settings.