Portable Update will allow you to update your Microsoft Windows computer in a isolated environment.You can use Portable Update in order to successfully update an isolated computer because it uses an external cache to store the updates. This cache can be used on any usb external drive or, via private LAN network, on a shared path. Once an update is copied to the cache (the only time that an internet connection is required), the same update will be used for all computers that need that particular update.Once the target update is stored into the cache folder, Portable Update will use standard Windows Update API services to update your computer. No worries if you have different updates from different operating systems - they can be located in the same cache folder since they are individually identified. As result of this fact, you can see the log update in the standard update history log exactly as if it was done from the normal Windows Update site!Being able to update can be useful: When the computer resides 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's necessary to update the computer very quickly; In all the other cases when it's mandatory to have the complete control on the updating process without connecting the computer to the network.