An Authentication that assumes an automatic logon.
The AuthenticationActiveDirectory authentication type does not support Active Directory Security Groups out-the-box. To see how to map XAF security roles to AD groups, refer to the How to: Assign the Same Permissions for All Users of an Active Directory Group
Certain browsers (e.g., Firefox), may prompt users to type their Windows credentials in a logon dialog which is rendered by the browser itself. Refer to the browser documentation to see if it is possible to avoid this dialog. The standard XAF logon dialog is not shown in any case.