The process of downloading the Microsoft Xbox Controller (DFU) Driver 6.3.9600.16384 for Windows 8.1 64-bit 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 Xbox Controller (DFU) Driver 6.3.9600.16384 for Windows 8.1 64-bit 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 Xbox Controller (DFU) Driver 6.3.9600.16384 for Windows 8.1 64-bit diver.