: If you have the .inf file (often usbstor.inf or similar for generic USB devices), you may need to manually point [Device Manager](microsoft.com to the file to force-install it on a 64-bit system. Are you trying to install a specific scanner model , or Cannot update any drivers after upgrade to Windows 8.1
For most users, Windows will attempt to install a generic driver automatically. If it fails, follow these steps to manually update: uscanse drivers 64 bit
