“Usoclient.exe” is a built-in command line tool for Windows Update that can be used to scan for updates, start updates, and even uninstall updates. It provides an alternative to Windows Update's graphical user interface. This tool can be especially useful for IT administrators who need to run Windows Update simultaneously on multiple machines. It can be run from the command line and provides options for updating in managed environments. It also allows for more detailed control over the update process, such as setting which updates to install or uninstall.