The module penusa.dll, known as Microsoft USA Handwriting Input UI, belongs to software Microsoft Office XP Professional by Microsoft. This is an office suite for Microsoft Windows operating system that relates to the use of a surface digital pen that allows users to write on the touch screen. The surface pen can be used to draw and take notes, mark-up PowerPoint presentations, Adobe PDF files and Word documents. The pen functions like a mouse, and switching between mouse, touch, pen, and keyboard is seamless. The surface pen has a pressure sensitive tip for drawing, and applying pressure thickens the line in apps that support pen pressure. The pen button provides quick access to the right click menu. The pen eraser, which functions like a pencil eraser, removes pen strokes from the touchscreen. Inputs to the touch screen surface can be done with the surface pen or with fingers to open apps and access settings, which are done by tapping or sliding the fingers on the touch screen.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. penusa.dll. is used by Microsoft USA Handwriting Input UI, If you shut down penusa.dll, it will likely start again at a later time either after you restart your computer or after an application start. To stop penusa.dll, permanently you need to uninstall the application that runs this process which in this case is Microsoft USA Handwriting Input UI, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed penusa.dll

A process usually a part of an installed application such as Microsoft USA Handwriting Input UI, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if penusa.dll. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that penusa.dll, belongs to, in this case Microsoft USA Handwriting Input UI