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When you try to run an application that is built on the Active Template Library (ATL) framework on Microsoft Windows 2000 or on an earlier version, the application does not run. You may receive the following error message:
The procedure entry point FreeAddrInfoW could not be located in the dynamic link library WS2_32.dll.
This problem occurs when the following conditions are true:
The application uses the CSocketAddr class.
The application was written by using Microsoft Visual C++ .NET 2003.
This problem occurs because the Unicode implementation of the ATL framework uses the FreeAddrInfoW Windows Sockets function in the CSocketAddr class. However, this API is only implemented in Microsoft Windows XP and in later versions.
Note The FreeAddrInfoW Windows Sockets function was introduced in Microsoft Windows XP and in Microsoft Windows Server 2003. The FreeAddrInfoW Windows Sockets function adds support for the Internet Protocol version 6 (IPv6) stack.
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates