We had a few customers having some issues connecting to Lync Online from Lync for Mac 2011. The good news is this past weekend we provided a Microsoft Lync for Mac 2011 14.0.1 Update package available for download to help correct some of these issues. This update will also be available to Lync for Mac users this week through Microsoft Update.
Screenshot of desktop sharing on a Mac to a PC or vice versa.
This update addresses two known issues:
After installing this update, Lync for Mac users will be able to connect to Office 365 and use Lync for Mac on Mac OS X Lion 10.7.2.
You can find more information about this update in the Microsoft Knowledge Base article
See more about Lync for Mac 2011 capabilities here.