The process of downloading the Microsoft LifeCam Cinema Driver 4.25.525.0 for Windows 8.1 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the Microsoft LifeCam Cinema Driver 4.25.525.0 for Windows 8.1 driver from the primary server - this is the manufacturer’s Microsoft official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the Microsoft LifeCam Cinema Driver 4.25.525.0 for Windows 8.1 diver.