Microsoft KB Archive/225004

= WSAEMSGSIZE - Error 10040 in Winsock 2.0 =

Article ID: 225004

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT 4.0 Service Pack 4

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This article was previously published under Q225004



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 accomodate 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.



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 latest service pack, please go to:


 * http://www.microsoft.com/windows/servicepacks/ -or-


 * 152734 how to obtain the latest windows nt 4.0 service pack

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:

http://support.microsoft.com/directory/overview.asp

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. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



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.

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe KB225004

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