Hi,

DFS does not detect the network state change when removed off the original
network. Nor does DFS note the network state change when added onto a new
network. When Explorer is opened DFS will try to resolve the path to this
mapped drive but it is not reachable. DFS will not gracefully fail out and
explorer appears to hang.

The command line solution is to run "dfsutil /pktflush" once the machine is
undocked/removed from network.

Hope it helps.

Best regards,

Robinson Zhang
Microsoft Online Support