WSAEMSGSIZE - Error 10040 in Winsock 2.0

ID: Q225004

The information in this article applies to:

Microsoft Windows NT Server version 4.0 SP4

SYMPTOMS

The Microsoft Winsock 2.0 WSARecvFrom() function does not work 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 work 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.

RESOLUTION

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/

Q152734 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://www.microsoft.com/support/supportnet/overview/overview.asp

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. This problem was first corrected in Windows NT 4.0 Service Pack 6.

Additional query words:

Keywords : kbbug4.00 kbfix4.00
Version : winnt:4.0 SP4
Platform : winnt
Issue type : kbbug