The CreatePersistentCookie property value is set in the configuration for an ASP.NET application using the createPersistentCookie attribute of the roleManager configuration element.
When false, the role-names cookie is a session cookie, that is, the cookie is lost when the browser is closed. When true, the role-names cookie is a persistent cookie that is available across multiple browser sessions. The persistent cookie expiration date and time are set to the current date and time plus the CookieTimeout value in minutes.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)