I have 5 windows xp machines and 1 windows 7 machine setup in a workgroup. All but 1 xp machine and the 1 windows 7 machine keep losing the network scan device over night and xerox second level support was unable to find a solution to the problem. has anyone encountered this issue before and know how to resolve it? We can re-add the network scan device to the pc's it drops from and scan fine all day long, it just loses the device overnight for some odd reason. The printer device itself is never lost from the printers and devices screen, just the added device from the network scan portion of the software is where the device is being dropped.