Error message when you modify the MSFT_SIPPoolSetting WMI class on a computer that is running Communications Server 2007: "0xC3EC7D0F(LC_VALIDATION_E_READ_ONLY_PROP_MODIFIED)"

You receive the following error message when you modify an instance of the MSFT_SIPPoolSetting Windows Management Instrumentation (WMI) class on a computer that is running Microsoft Office Communications Server 2007:This problem may occur if one of the following conditions is true:

• You enable a Quality of Service (QoS) server that serves a Communications Server 2007 pool.
• You select a location profile for a Communications Server 2007 pool.
• You select a Communications Server 2007 audio/video (A/V) Authentication Service, an internal FQDN, and an A/V authentication port.

To resolve this problem, install the update package that is described in the following Microsoft Knowledge Base article:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the MSFT_SIPPoolSetting class, visit the following Microsoft Web site: