Msg.exe Error 5 Getting Session Names

Question

Ok after 2 days of research and messing with policys i still have yet to resolve this issue. Due to vista not having netsend anymore I tried using the msg.exe command. So far I have got it to work just on my local computer. But sending it to other vista computers It gives me an error:
Error 5 getting session names
I am computer Atlantis
Destination: computer designated as "Challenger"
Both running Vista Business SP1
msg /server:atlantis admin "Test Message"
(local to local pc works)
msg /server:challenger admin "Test Message"
---> Response: "Error 5 Getting Session Names"
We are in the same work group, we are not part of a domain
Any help would be appreciated. From reading it seems to be a policy edit that needs to be changed, but I do not know what to change, so any detailed instructions would be greatly appreciated...
Alternative i tried: Also i downloaded netsend by czero.com and I can only send the message to XP computers. I cannot send a message to even myself. 

Answer 1

Hello,
Based on some discussions about this topic, some community members provide the following tool as the replacement of net send that is not included in Windows Vista:
http://www.cezeo.com/products/netsend/
It’s said to support Windows Vista. Please give it a try. 
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Regards,
Lionel