The following web browsers are supported for the Lync 2013 Web App Client:
• 32-bit Internet Explorer 10
• 64-bit Internet Explorer 10
• 32-bit Internet Explorer 9
• 64-bit Internet Explorer 9
• 32-bit Internet Explorer 8
• 64-bit Internet Explorer 8
• 32-bit Firefox 12.x
• 64-bit Safari 5.x
• 32-bit Chrome 18.x
A Microsoft ActiveX browser plugin is required for participating in audio and video sessions through the web browser. Refer to Table 26.2 for a full matrix of browser and operating system support combinations.