KB 2791382 - Lync 2010 client - March 2013 cumulative update

This cumulative update fixes the issues that are documented in the following Microsoft Knowledge Base (KB) articles:

  • A user unexpectedly signs in to Lync 2010 as another user without a prompt for credentials after a cumulative update for Lync 2010 that is dated February 2012 or later installed 
  • IM window opens unexpectedly when you use the IME to search in Lync 2010 
  • Lync 2010 contacts list does not display in alphabetical order after a contact's name is changed in the Contacts folder in Outlook 
  • An update is available to enable you to join a meeting by using Lync 2010 when a proxy authentication is required 
  • Error message when you try to send an email message to a contact in Lync 2010 on a computer that does not have Outlook installed 
  • An update enables participants to join meeting audio by telephone or phone when the meeting is organized by an audio/video-disabled user in Lync 2010 
  • Call transfer is not successful when you use UI suppression in a Microsoft Lync 2010 SDK application 
  • You cannot use Lync 2010 to join a Lync Online meeting that was created by a user in a non-federated organization 
  • Error message when you try to join a Lync Online meeting that is created by a user in a non-federated organization in Lync 2010

You can read more about it here.