Symptoms
Applications that use the Socket Forwarder component in Microsoft Forefront Unified Access Gateway 2010 may stop responding or be unable to connect if the application uses the ConnectEx API. This problem is known to occur with WinHTTP in Windows 7 and later operating systems but may also occur with other applications.
Resolution
This problem is fixed in Rollup 1 for Forefront Unified Access Gateway 2010 Service Pack 4.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.