You MUST purchase one user CAL for each person connecting to your terminal server. Having everyone use the same account doesn't cut it.
JamesNT
And begging for an audit. RDS Licensing works one of two ways: Per User or Per Device.
Per Device licenses are "checked out" in 90 day increments and will max out on the RDS license server and prevent more connections. Per Device is useful when multiple users (several shifts, etc, like a hospital floor computer) use the same computer. When the device doesn't check-in the license then becomes available again.
Per User licensing is not managed in the license server and relies on honesty to own the correct number of licenses. Per User licenses is more useful when one active directory user logs in from multiple devices, i.e. a doctor that does his notes in the office, on his laptop, and at home.
In any case, in a RD environment, I don't believe you can have multiple AC users simultaneously sharing an AD profile in Remote Desktop/Remote App because the Session Broker would connect all the users to the same AC session.