Session Manager Subsystem, or smss.exe, is a component of the Microsoft Windows NT family of operating systems, from Windows NT 3.1 to Windows 7 and Windows Server 2008 R2.
Session Manager Subsystem is a component of the Microsoft Windows NT family of operating systems to Windows 7 and Windows Server 2008 R2. This is from Windows NT 3.1. Smss.exe, is a component of the Microsoft Windows NT family of operating systems to Windows 7 and Windows Server 2008 R2. This is from Windows NT 3.1.