Configuring preferences and options in Outlook.com
Hi Everyone,
I apologize for any inconveniences this may have caused you on your end. Please be informed though that the option to sign out of Messenger in Outlook.com is not available. Like what the previous moderators have mentioned, the current option that we have is to set your status as invisible. Also, if you are signed onto Windows Live Messenger, you have the option to Sign out from the web, this would disable your Web messenger in the meantime.
Please let us know if you have additional questions.
Thanks!