Users who are running Microsoft Internet Explorer 6 or Windows Internet Explorer 7 on a Windows XP-based or Windows Vista-based computer cannot join a Microsoft Lync 2013 meeting by using Lync Web App. When users try to join the meeting, they receive a message that states that the browser is not supported.
However, users can use Lync Web App to join a Microsoft Lync Server 2010 meeting, as expected.
However, users can use Lync Web App to join a Microsoft Lync Server 2010 meeting, as expected.