Microsoft KB Archive/289229

= Access Violation in Masfd.dll Results from Using Winsock Direct Path to Communicate with Storage Area Network =

Article ID: 289229

Article Last Modified on 1/31/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1

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This article was previously published under Q289229



SYMPTOMS
When you are using a server application such as Internet Information Services (IIS), which is included with Windows 2000, and you try to communicate with a Storage Area Network by using the Winsock Direct path, an access violation occurs in Masfd.dll.



CAUSE
This behavior can occur when an overlapped TransmitFile is done with the REUSE flag but the socket is closed before the socket REUSE processing is complete.

This behavior only occurs with the Winsock Direct path. It does not occur with the regular TCP/IP code path of Masfd.dll.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in Microsoft Windows 2000.

This problem was first corrected in Windows 2000 Service Pack 2.

Additional query words: race condition assert

Keywords: kbbug kbfix kbwin2000presp2fix kbnetwork kbprogramming KB289229

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