Establishing and maintaining an improved single Sign-on (SSO) facility

A login page is sent, by a backend server system, to a browser executing on a client associated with a user; and an authentication process is performed by the backend server system with the client. The logic page is intercepted by a proxy, and a modified logic page is generated by the proxy by adding a routine to the logic page. The modified logic page is forwarded to the browser, and the routine causes the browser to loads an asynchronous engine configured to execute a login process with an authentication profiling service to retrieve login information for the back-end server, and complete the authentication process.