Microsoft Online Services released a new version of the Microsoft Online Services Sign-In application version 1.0.1423.65, that includes bug fixes and new capabilities. The capabilities include support for additional languages as well as support for service lifecycle prompts within the Sign-In application; these prompts provide notification about the status of your subscription. The new version of the application will be available from the Microsoft Download Center for users and IT administrators that wish to manually download and install the application. Installation of new version is optional. However, unless you explicitly disable end-user notifications before February 24, 2010, your end-users will begin receiving desktop notifications about the new version of the Sign-In application, prompting them to install the update. If you want your end-users to be notified about the new version of the Sign-In application and install the new version themselves, your end-users simply need to follow the instructions provided in the Sign-In application prompts for automatic download and installation. Refer this post to Disabling End-User Notifications in the Sign-In Application.
Download: Microsoft Online Services Sign In