Troubleshooting for Lync for Mac 2011 with Lync Server 2010

Microsoft Communicator for Mac 2011 and Microsoft Lync for Mac are two instant messaging (IM) clients that are designed to be used with the Apple operating system in a Communications Server or Lync Server 2010 unified communications environment. This combination of technologies necessitates that the user understands the preliminary steps that are required to get Mac-oriented IM clients connected to the Windows unified communications environment. This article provides some handy troubleshooting steps that may be required to test Microsoft Lync for Mac connectivity to the Microsoft Lync Server 2010 pool servers, and provides information for collecting the logs that are required for troubleshooting.

Author: Edwin Joseph

Publication date: November 2011

Product version: Microsoft Lync for Mac version 14.0.1

The purpose of this article is to explain how to troubleshoot Microsoft Lync for Mac connectivity to Microsoft Lync Server 2010 or pool servers, and collect the required logs for troubleshooting. It is intended for people who’ve had some exposure to the Mac operating system. This information is distributed in various formats, such as PDF and HTML, across various sites (blogs, discussion forum, and so on) and documents that have been consolidated to provide effective troubleshooting.

The versions of the Mac operating system that will be discussed in this article are:

  • Mac OS X Snow Leopard (version 10.6)
  • Mac OS X Lion (version 10.7)

The steps that are used to troubleshoot Mac OS X Lion and Mac OS X Snow Leopard are similar.

Common Troubleshooting

For information about troubleshooting network connectivity issues by using tools such as Ping, Port Scan, and proxy configuration, installing certificates on the Mac, and verifying certificate presence, refer to the following blog post: Troubleshooting Connectivity for Messenger for Mac 7.0.2 and Communicator for Mac 2011 with Communications Server 2007 R2 and Lync Server 2010.

NOTE: Command key or also commonly known as the Apple key.

When working with Mac OS X Lion or/and Microsoft Lync for Mac, make sure that you have the 14.0.1 update installed for Microsoft Lync for Mac 2011.

Download the update from the Download Center at Microsoft Lync for Mac 2011 14.0.1 Update.

Set Configuration Settings for Lync for Mac

In this section, we’ll walk through setting up some common configuration settings for Lync for Mac, such as changing the sign-in address, changing settings related to Microsoft Exchange Server, and changing settings for Microsoft Outlook.

1. Start Microsoft Lync for Mac, and then press the Command key and the “,” (comma) key to set the preference.


1. Start Microsoft Lync for Mac, and then click Lync in the menu options.

2. In the Lync menu, click Preferences.

3. Click the Account tab to display the email address or SIP URI (Figure 1).

Figure 1: Account settings for Lync for Mac 2011


4. If required, select Show me away when I am Inactive for this many minutes, and then select the number of minutes in the drop-down box.

5. If required, select appropriate check boxes for Microsoft Exchange and Microsoft Outlook.

For advanced troubleshooting, do the following steps:

1. Under Server Settings, click Edit to manually enter the pool name for both internal and external use. Manual configuration can help to troubleshoot DNS name resolution issues.

2. You can also enable Kerberos authentication for Lync for Mac from Advanced Server Settings (Figure 2).

NOTE: When connected to the internal corporate network (LAN), to enable Kerberos authentication for Lync for Mac, verify that the Kerberos plug-in has been enabled in Mac OS X and is working correctly.

Figure 2: Advanced Server Settings


Log on to Microsoft Lync for Mac

1. Click the General tab in preferences to enable logging.

NOTE: After logging has been enabled in Preferences, sign out of or exit from Microsoft Lync for Mac, and then restart Microsoft Lync for Mac.

2. The logs are located in users/username/library/logs/Microsoft-Lync-0.log. (The zero increments as the log file grow.)

Figure 3: Preference General tab

Set Phone Calls Settings

The Phone Calls tab can be useful in troubleshooting voice call related issues. To set the appropriate Phone Call options, such as Call Forwarding and Unanswered Calls, do the following:

1. Click the Phone Calls tab in the preference settings for Microsoft Lync Communicator for Mac 2011 (Figure 4).

2. Select the appropriate settings for Call Forwarding options.

3. In the drop-down box under Unanswered Calls, you can choose to forward the call to a phone number or to voice mail, and then select the number of seconds that should elapse before an unanswered call is redirected.

Figure 4: Preference Phone Calls tab



In this article we’ve looked at Microsoft Lync for Mac which is the latest instant messaging client offering from Microsoft for Mac users to connect to the Lync 2010 Server unified communication environment. Microsoft Lync for Mac can be installed with the Mac OS running an Intel processor only, and it offers features for collecting logging information that are comparable to other Lync Server 2010 clients.

For a comparison of features and capabilities of Lync Server 2010 clients, refer to the article at TechNet, Client Comparison Tables

Lync Server Resources

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Comments (8)
  1. Ian B says:

    I have the same problem as Sue. Lync will not connect when somewhere other than the office LAN. Even over VPN, no go: "sign in to Microsoft Lync failed because the service is not available or you may not be connected to the internet" I have manually uninstalled & reinstalled. No change. I have sent my server names to those provided by the IT department. No go.

  2. Edandres says:

    Hello dude, when i´m trying to call an external number, my lync for mac stops and closes the session, after 2 seconds the lync restarts normally, my dial rule is 9 before the telephone number, for example: 9 1234567, what can i do? Thanks.

  3. Edandres

    for this you can look at the Lync logs and see what is causing the restart.

    also ensure we have the…/2690036 update installed

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