Lync Server 2013 Whiteboard Archiving Viewer Tool
The Whiteboard Archiving Viewer tool is an administrative tool that you can use to convert Lync Server 2013 archived web conferencing whiteboard content saved in the Microsoft Exchange 2013 by Lync Server 2013, from XML format into a viewable format.

In Lync Server 2013, the whiteboard(s) used during the meetings is archived as an XML file into the archiving store (file share if using database or Microsoft Exchange 2013). You can use this tool to convert Lync Server 2013 whiteboard content archived by Lync Server 2013 Web Conferencing service, into an HTML5 format, so you can view the whiteboard in a supported browser.
Espero que os sea de utilidad!!!