Windows Live Messenger 2009 build 3921

14.0.3921.717
Build of Windows Live Messenger 2009
WLM 14.0.3921.png
Login window
Compatible withMicrosoft Windows
Released2008-08-23
Timebomb
About
WLM 14.0.3921 about.png

Windows Live Messenger 2009 build 3921 is a beta build of Windows Live Messenger 2009, which was released on 23 August 2008. With this build, the version number jumped from 9.0 to 14.0 to correspond with other Windows Live products such as Windows Live Mail.