Receiving Many Simultaneous H.323 Requests Causes a Computer with ISA Server Installed to Hang

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This article was previously published under Q271379

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SYMPTOMS

After a few seconds of receiving a few hundred simultaneous H.323 requests, a computer that has Microsoft Internet Security and Acceleration (ISA) Server installed may stop responding (hang).

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CAUSE

This behavior occurs because of a single-thread deadlock in the RemoveRandomFWPacket routine.

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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
   --------------------------------------------------------
   12/05/2000  05:51a  5.0.2195.2778  123,184  afd.sys
   12/05/2000  05:51a  5.0.2195.2779  107,280  msafd.dll
   12/05/2000  05:51a  5.0.2195.2785  323,088  tcpip.sys
   12/05/2000  05:51a  5.0.2195.2572   16,240  tdi.sys
   12/05/2000  05:51a  5.0.2195.2104   17,680  wshtcpip.dll

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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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