Does Windows Authentication for Orchestrator work with AWS Application Load Balancer?
No, AWS Application Load Balancer does not work with Windows Authentication as there is a limitation on AWS side.
Please refer https://netblaze.biz/windows-authentication-fails-with-aws-application-elb/ for more info.
However, there is a workaround https://cloudninjablog.wordpress.com/2014/08/22/configuring-aws-elb-to-work-with-windows-authentication/ to get over it although we do not support it.
Thus, it is suggested to use a classic layer 4 load balancer if Windows Authentication is required for Orchestrators in AWS.