Developed by an individual known as DeepXW, this utility targets the termsrv.dll file, which is responsible for managing Terminal Services. In consumer versions like Windows 7 Professional or Ultimate, this file is coded to prevent multiple simultaneous logins. The patch modifies these specific binary patterns to allow concurrent RDP sessions. Key Benefits for Windows 7 64-bit

Patchers are architecture-specific. A patch designed for 32-bit (x86) systems will not work on 64-bit (x64) systems, and attempting to apply the wrong patch can corrupt the system file or cause the Operating System to fail to boot into a graphical interface.

The so-called "Universal Termsrv Patch" is an unofficial, community-created modification designed to remove this restriction. This article explains what the patch does, how to apply it on , and the critical security and licensing risks involved.