Microsoft KB Archive/184072

= HasOverlappedIoCompleted Returns TRUE While GetOverlappedResult Returns 0 Bytes Transferred =

Article ID: 184072

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 Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q184072





SYMPTOMS
After an application (such as Microsoft SQL Server) issues asynchronous I/O to the hard disk, HasOverlappedIoCompleted returns TRUE and GetOverlappedResult returns 0 bytes transferred.

NOTE: After a few microseconds, GetOverlappedResult returns the correct value.



CAUSE
This problem has primarily been observed on symmetric multiprocessing (SMP) computers, where I/O completion updates fields in the OVERLAPPED structure in the wrong order.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or 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 Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Keywords: kbhotfixserver kbqfe kbbug kbfix KB184072

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