As title says, the msn messenger servers have been stopped (except for China), so emesene msn backend will stop working soon (or already had!)
https://www.google.com/search?q=msn+shutdown
That being said, emesene still can be useful since it can support multiple backends (such as XMPP, currently implemented through SimpleXMPP).
Even if development has been dormant for a while, the code is still there if you want to play with it (desktop Whatsapp? Facebook Chat?).
Have fun,
Riccardo (c10ud)