Mac OS X user is unable to sign into Lync from home computer

Posted on 2011-10-17
Last Modified: 2012-06-21
I have a Mac OS X user is unable to sign into Lync from his home computer.

His computer has Mac Office 2011 installed along with Lync 2011.

Every time that he tries to logon to Lync, he gets a message saying "Sign in failed because the password is incorrect or the sign-in name does not exist. If you have forgotten your password, choose Help Topics from the Help menu."

I know that he is using the right password and username since we have used the same password and username in Outlook Web Access and Mac Outlook 2011 and he is able to logon without any problems at all.

What do I need to do to fix this issue so that user will be able to logon to and use Lync 2011 without any problems?

PLEASE NOTE: I have "whited out" all identifying information in the attached picture. The user logs into Lync using his email address in the format of
Question by:Knowledgeable
    LVL 11

    Accepted Solution

    Have you tried leaving the email address blank? It's possible that, because the Mac is not joined to the domain (I'm assuming it isn't), that the email address won't function as a user ID the way it would on an Active Directory participant.

    Author Closing Comment

    Still trying to find a solution.

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