Cannot synchronize a Microsoft Windows Mobile-based device by using Microsoft ActiveSync 4.x.CAUSE: This problem occurs when companies enforce policies that allow only one network interface on their desktops computers. ActiveSync 4.x uses Remote Network Driver Interface Specification (RNDIS) to communicate with Windows Mobile 5.0-based devices when they are connected to desktop computers. Because the RNDIS connection comes up as a network interface, you cannot use RNDIS with Windows Mobile 5.0-based   read more »