MSN Messenger Service 1.0 Protocol

Document Type Expired Internet-Draft (individual)
Last updated 1999-08-31
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Microsoft released a commercial Instant Messaging product in July of 1999 called MSN Messenger Service. This document describes the protocol used by that product for core instant messaging and presence functionality. While this protocol does not meet many of the requirements of the IMPP working group, it is provided as background information on existing Instant Messaging implementations. This protocol is provided 'as is' without warranty of any kind.


William Lai (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)