Active directory Authentication to use pfsense Proxy

[sine_kitt]

Hi ,
Thanks for reading my post….so what i want to know is that how to setup proxy with AD authentication so that whoever connected to pfsesne proxy when tried to search on net ( ex:- type google.com n search bar hit enter ) will get an authentication message to enter the password...i have already setup authentication server on system-> usermanager-> authentication server....n tested on diagnostic->authentication and it worked...but culdnt get login message to user's browsers