Is there any way to customize the SalesLogix login page ?
Actully I need to know the user name who is trying to login even after "Number of Users License" is full.
Meaning if my application have license of 100 user , i need to know in any way who is the next person (101st) trying to login.
You can absolutely customize the login.aspx page. The SalesLogix Login page contains a standard ASP.NET asp:Login control. You can use the OnLoggingIn event to record who is attempting to log in (using the control's UserName property to get the user who is logging in).