"Restrict Remote Desktop Services users to a single Remote Desktop Services session".
Allows multiple users to log in simultaneously without kicking the active user off. Universal Support: universal termsrv.dll patch windows server 2012 r2
acts as a layer between the Service Control Manager and Terminal Services "Restrict Remote Desktop Services users to a single
Fortunately, a universal patch is available that can fix these issues and more. The patch is designed to work on Windows Server 2012 R2 and can be applied to fix problems related to termsrv.dll. universal termsrv.dll patch windows server 2012 r2