Portable Update is a windows-based tool for updating a Microsoft Windows computer in a isolated environment.This is useful in many circumstances: When the computer reside on a secure LAN isolated from internet; When the computer to update doesn't have access or can't use a proxy server; When is necessary to completely update a fresh-formatted computer with the last update before to connect it to network; When the computer doesn't have an hardware network connection at all; When the network connection speed is too low or it is necessary to update the computer very quickly; In all the other cases when is mandatory to have the complete control on the updating process without connecting the computer to the network.