cisco forum
Sometimes you just want to send a short message to a user on the same network, so it's often asked how to send messages over the network. Well, in Windows XP many users certainly known command "net send" and it was not a big problem and was very easy, is difficult under the new Windows 7 or even Windows 8.1 or 10. The reason is that you can no longer use the classic "net send" is new application named LAN messenger.