Deadlock When APC Routine for SetWaitableTimeruser Calls System Interfaces

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This article was previously published under Q268229

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SYMPTOMS

In Windows 2000, a deadlock can occur if system calls are made in the APC routine for SetWaitableTimer.

In particular, this problem may occur in scenarios with the following characteristics:

A multithreaded program
Positive non-zero lPeriod in SetWaitableTimer
MsgWaitForMultipleObjectsEx is set to be MWMO_ALERTABLE
System calls (for example, Net, Wnet, COM, etc.) are invoked in the APC routine specified in SetWaitableTimer
The system calls also invoke alertable internal routines

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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 (http://support.microsoft.com/kb/260910/EN-US/ ) How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date        Time    Version       Size      File name
   ------------------------------------------------------
   08/10/2000  03:26p  5.0:2195.2103 426,256   Rpcrt4.dll

NOTE: This fix is intended to be used only in Windows 2000. The next release of Windows may not have this fix. You should modify the program to work around this limitation.

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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 2000 Service Pack 2.

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MORE INFORMATION

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 (http://support.microsoft.com/kb/249149/EN-US/ ) Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

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