Why is login message displayed when auto-domain authentication is enabled?
This typically happens while accessing the Launch Server (implicitly or explicitly) with an IP address, instead of its host name. Internet Explorer identifies a host as a part of the local network, when it resolves it by lookup. As a result it adds the host to the local intranet zone and subsequently honors the integrated login. In case of IP address, Internet Explorer does not know the location of the computer. For the sake of safety, it adds the computer to the Internet zone and does not honor integrated login.
Configure the Launch server URL to use host name instead of IP address:
Configure Internet Explorer's security settings:
Add the launch server to trusted site:
If pre-population is enabled, ensure the WebURL parameter in the config file is configured to use host name and not IP address.