You can use the vdmadmin command to enable authentication of clients that attempt to connect to their remote desktops via a Connection Server instance.
You must run the vdmadmin command on one of the Connection Server instances in the group that contains the Connection Server instance that clients will use to connect to their remote desktops.
Although you enable authentication for an individual Connection Server instance, all Connection Server instances in a group share all other settings for client authentication. You need only add an account for a client once. In a Connection Server group, any enabled Connection Server instance can authenticate the client.
If you plan to use kiosk mode with a session-based desktop on an RDS host, you must also add the user account to the Remote Desktop Users group.
Procedure
Example: Enabling Authentication of Clients in Kiosk Mode
Enable authentication of clients for the Connection Server instance csvr-2. Clients with automatically generated passwords can authenticate themselves without providing a password.
vdmadmin -Q -enable -s csvr-2
Enable authentication of clients for the Connection Server instance csvr-3, and require that the clients specify their passwords to Horizon Client. Clients with automatically generated passwords cannot authenticate themselves.
vdmadmin -Q -enable -s csvr-3 -requirepassword
What to do next
Verify the configuration of the Connection Server instances and the clients.