Video preview window is black in Lync for Mac 2011 Content provided by Microsoft Applies to: Microsoft Lync for Mac 2011 Select Product Version All Products Symptoms On the Preferences menu in Microsoft Lync for Mac 2011, you select Video so that you can see video preview. However, the video preview window displays only a black screen. Resolution To fix this issue, install the update for Lync for Mac 2011 14.3.3. Last Updated: 10 Mar 2016 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.