Lync 2010 Hotfix KB 2551268 (64 bit)

Issues that this update fixes

This cumulative update fixes the following issues:

2551849 (https://support.microsoft.com/kb/2551849/ ) Lync 2010 still polls for the conversation history of a non-listed contact
2551847 (https://support.microsoft.com/kb/2551847/ ) Lync 2010 still polls for the voice mail of a non-listed contact
2551846 (https://support.microsoft.com/kb/2551846/ ) An update is available that adds npMeetingJoinPluginOC.dll and MeetingJoinAxOC.dll files to Lync 2010
2551848 (https://support.microsoft.com/kb/2551848/ ) The Office Communicator Object Model API requires calling additional subscription to stop polling subscriptions in a Lync 2010 environment

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Additional resources