Application and desktop sharing features are missing when Lync Web App runs on Internet Explorer 11 or Firefox

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Lync Server 2010 Enterprise Edition Lync Server 2010 Standard Edition More...Less

Symptoms

Consider the following scenario:

You create a meeting in a Microsoft Lync Server 2010 environment.
You install an October 2013 cumulative update for Lync Server 2010, Web Components server in the environment.
A user joins the meeting by using Lync Web App in Internet Explorer 11 or Firefox in Windows 7 or Windows 8.1.
The user clicks the Share list in Lync Web App.

In this scenario, the Desktop option and the Program option are not displayed in the Share list.

Resolution

To resolve this issue, install the following cumulative update:

2953588 Description of the cumulative update for Lync Server 2010, Web Components Server: April 2014

More Information

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.