Windows NT 4.0 is an operating system released by Microsoft in July 1996. It was designed for both workstations and servers, providing a stable and secure environment for business applications. This version introduced a graphical user interface similar to Windows 95, making it more user-friendly while maintaining the robustness of the Windows NT architecture. One of the key features of Windows NT 4.0 was its support for multiple processors, enhancing performance for demanding applications. It also included improved networking capabilities, allowing better integration in corporate environments. Overall, it laid the groundwork for future Windows operating systems.