I had been trying to integrate my Office 365 OWA with my Lync 2013 on-premises IM feature but cannot succeed. I had been following the steps in url: http://help.outlook.com/en-us/140/gg702674.aspx. Wonder anyone of you can offer any advices ?<v:shapetype coordsize="21600,21600" filled="f" id="_x0000_t75" o:preferrelative="t" o:spt="75" path="m@4@5l@4@11@9@11@9@5xe" stroked="f">
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Hi,

Please follow this:

How to integrate Exchange Online with Lync Online, Lync Server 2013, or a Lync Server 2013 hybrid deployment
http://support.microsoft.com/kb/2614614

David