"The server is not reachable" error message when you try to sign in to Lync for Mac 2011 in an internal network

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Article ID: 2888982 - View products that this article applies to.
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Symptoms

Consider the following scenario:
  • A Microsoft Lync for Mac 2011 client is configured so that it can only sign in to a Lync Server environment from external access.
  • The client is in an internal network of an organization, and the client can parse either internal or external DNS names.
  • You configure the Lync for Mac 2011 client to sign in automatically.
  • Lync Server 2010 or Lync Server 2013 is configured to block the client when the client tries to directly sign in to Front-end server pools.
  • You try to sign in to the client.
In this scenario, you cannot sign in to the client. Additionally, you receive the following error message:
The server is not reachable.

Cause

This issue occurs because the Lync for Mac 2011 client does not try to use external access to connect to the Front-end pool when the client cannot use internal access.

Resolution

To resolve this issue, install the following update:
2888920 Description of the Microsoft Lync for Mac 2011 14.0.6 update

Properties

Article ID: 2888982 - Last Review: October 8, 2013 - Revision: 1.0
Applies to
  • Microsoft Lync for Mac 2011
Keywords: 
kbqfe kbfix kberrmsg kbsurveynew kbexpertisebeginner KB2888982

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