Universal Termsrv.dll Patch Windows Server 2003 Extra Quality ((exclusive)) -

You cannot install Windows Updates that replace termsrv.dll without reapplying the patch. This leaves you vulnerable to critical RDP exploits.

The patcher often includes a checksum recalculation to avoid triggering SFC (System File Checker) and modifies the licensing state machine to always report "Licensed" instead of "Temporary" or "Expired." You cannot install Windows Updates that replace termsrv

designed to bypass the artificial limitation on concurrent Remote Desktop (RDP) sessions in Windows You cannot install Windows Updates that replace termsrv