Set up Lync for Mac 2011 for Office 365
If your organization is using Microsoft Lync for Mac 2011, you can use it with your Microsoft Office 365 for professionals and small businesses account.
To use Lync for Mac 2011 with Office 365, you need to install the Microsoft Lync for Mac 2011 Update and then provide the following information.
In the Microsoft Lync for Mac sign-in window, type your Office 365 email address, user ID, and password. Use the same user ID and password that you use to log on to Office 365, for example, **firstname.lastname@example.org**.
Under Authentication, clear the Use Kerberos check box.
In the Microsoft Lync for Mac sign-in window, click Sign In.