Expression Encoder may crash when live broadcasting

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This article helps you resolve the problem where Expression Encoder crashes when it's configured to push a stream to Windows Media Services via Hypertext Transfer Protocol (HTTP).

Original product version:   Microsoft Expression Encoder 4
Original KB number:   2883279

Symptoms

Expression Encoder 4 is configured to push a stream to Windows Media Services via HTTP. Expression Encoder may crash without reporting any error.

Cause

This problem may occur if there are problems with the Windows Media Format SDK namespace file, Wmsdkns.xml.

Resolution

Delete the Wmsdkns.xml file. After you delete it, Expression Encoder will re-create the Wmsdkns.xml file.

See the Resolution section of the following KB article for the steps:

Error message when you try to use Windows Media Player to stream audio or video from Windows Media Services: "The specified protocol is not supported"