Assume that a client that can send invalid culture information joins a conference. For example, a Damaka XAVY client joins the conference. In this situation, the Microsoft Unified Communications Managed API 3.0 (UCMAPI 3.0)-based Microsoft Lync Server 2010 components, such as the Conferencing Announcement Service and the Conferencing Auto Application, crash. Additionally, the following event is logged in the Application log.
Event ID: 33126 Task Category: (1301) Level: Error Keywords: Classic User: N/A Computer: <Computer Name> Description: An unhandled exception was encountered in Conferencing Announcement Service. Exception: System.ArgumentException: Culture name 'en_US' is not supported. Parameter name: name
This issue occurs because the client sends the invalid culture string "en_US." Then, the UCMAPI 3.0-based Lync Server 2010 components do not handle the invalid culture information correctly.
To resolve the issue, install the following cumulative update:
2793341 Description of the cumulative update for Lync Server 2010, Unified Communications Managed API 3.0 Runtime: March 2013
For more information about the RegionInfo Constructor (String), go to the following Microsoft website:
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