http://social.technet.microsoft.com/Forums/en-US/winserverTS/thread/567c380e-4d2f-4cb4-8df5-34575669d6d7 When a person leaves your company if you delete their AD user account the count of Per User RDS CALs in use will decrease automatically. A RDS Per User CAL expires after 60 days of not being used. What this means is that if you have a user account that has not logged on to one of your RDSH servers in the last 61 days they will not show up on the Per User CAL Usage report. The above are implementation details of Per User RDS license tracking. I will leave it up to you to decide what complies with the license agreement. For example, what is the definition of permanently? If an employee switches departments, does not use your RDSH servers for a year, and then starts using them again did you violate the EULA (assuming you reassigned the CAL)? Perhaps you would say no in this example. What about if the same thing happens for only ...