msscript.ocx is an ActiveX Control module that contains the ScriptControl control used in Visual Basic 6.0 applications for adding the run-time functionality of an ActiveX component to the control.
Non-system processes like msscript.ocx originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you
check your registry to identify slowdown issues.