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WSAEMSGSIZE - Error 10040 in Winsock 2.0

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This article helps to fix WSAEMSGSIZE - Error 10040 in Winsock 2.0.

Applies to:   Windows Server 2012 R2
Original KB number:   225004

Symptoms

The Microsoft Winsock 2.0 WSARecvFrom() function does not function and may display the following error message when used in a User Datagram Protocol (UDP) socket program:

WSAEMSGSIZE - Error 10040

The WSARecvFrom function does not function when a buffer counter greater than one is specified and the receiving datagram size exceeds 1,470 bytes.

The WSAEMSGSIZE error message may appear when the buffer size is not large enough to accommodate the receiving datagram.

Cause

If the datagram is fragmented, then the TCP driver does not fill the second Memory Descriptor List (MDL) in the I/O Request packet chain.

Resolution

Windows NT Server or Workstation 4.0

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update.

For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

Global Customer Service phone numbers

Windows NT Server 4.0, Terminal Server Edition

To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT Server version 4.0, Terminal Server Edition Service Pack 6.