We would like to get the windows user id who logs in PC and access the Pega application for example:- Domain/UserID 

Basically we need to avoid the login screen while doing LDAP authentication so we need to get the user id from logged in machine.

i tried below methods but they are returning the user account details of Pega server where it's hosted.

 System.getProperty("user.name");  System.getenv("USERNAME");  String userName = new com.sun.security.auth.module.NTSystem().getName()