MS Edge not passing windows credentials to intranet websites behind AWS ELB.

Hi,

Facing a issue in Azure AD joined Windows 10 device. This device is connected to corporate LAN using AOVPN. So, whenever the client tries to open a website behind load balancer , we get the authentication pop up. 

What we have configured:

1. Sites have been put up in Site to Zone map.

2. Use integrated Windows authentication is checked.

Note: There is no issue accessing website having HOST A record in DNS. 

Any help will be appreciated.