Microsoft has released the Lync 2013 Cumulative Update 1 (CU1). The naming conventions within “Lync” can be a little confusing. This is a CLIENT update for Lync 2013.
To enable these Lync 2013 updates, make sure both the Lyncloc and Msores packages are installed. The MS release notes say that this requires a restart of Lync 2013 after you install the update, but I believe a reboot of the client system is required.
For more information: http://support.microsoft.com/kb/2812461
Overview from MS:
This article describes the Microsoft Lync 2013 updates that are dated February 2013. These updates for Lync 2013 include many basic quality improvements since the initial release of Lync 2013. These updates include the following improvements:
The following updates are included in this release:
(http://support.microsoft.com/kb/2760512/ )
(http://support.microsoft.com/kb/2767852/ )
Note These updates affect only the Lync 2013 Desktop client. The Lync 2013 Virtual Desktop Infrastructure (VDI) client is not affected, and will be updated at a later date. We do not recommend that you install these updates if you use Lync 2013 in VDI mode.