The original Universal Termsrv.dll Patch utility (typically named UniversalTermsrvPatch.exe ) remains functional on Windows Server 2012 R2. This lightweight executable performs the patching automatically when run with administrative privileges.
The is a popular third-party modification used to bypass Concurrent Remote Desktop (RDP) sessions limits on Windows operating systems [1]. By default, Windows Server 2012 R2 allows two concurrent administrative remote sessions. If a third user attempts to log in, one of the existing users must be disconnected.
Provide full control to administrators via icacls "%windir%\system32\termsrv.dll" /grant Administrators:(F) .