"Net send" related

To send messages to all users currently open documents stored on server XYZ :
from Command prompt on XYZ, type : NEt SEND /USERS "message"
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Could not send to ANY computer with error "message alias could not be found"

SOLUTION:
Messenger service is probably stopped
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suddenly not working

SYMPTOM:
An error occured while sending a message to ...
A general network error occured
...NET HELPMSG 2136

SOLUTION:
Restart Messenger service
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Free client (receive only): Winsent Innocenti
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how to send multi-line message
Press CTRL+T after the last character of a line.
see How can I NET SEND a multi-line message? for alternative ways
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Maximum allowed length of a broadcast message is 128 characters. Maximum allowed length of a personal message is 1600 characters.
source: NET SEND command reference
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