Cause: Lync can only sign in with Lync Server 2010 accounts.
|Solution: You must use a Lync Server 2010 account. |
Cause: The e-mail address and password were not typed correctly.
|Solution: Retype your e-mail address and password.|
Cause: The firewall that is built into Mac OS X is blocking Lync.
|Solution: Confirm that your firewall settings are not blocking incoming connections for Lync.|
Cause: Your corporate network connection is not using the network protocol you expect.
|Solution: Manually configure your network settings.|