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

This article was previously published under Q271379
This article has been archived. It is offered "as is" and will no longer be updated.
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).
This behavior occurs because of a single-thread deadlock in the RemoveRandomFWPacket routine.
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 theMicrosoft Knowledge Base:
260910 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				

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.
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 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Article ID: 271379 - Last Review: 10/21/2013 00:33:28 - Revision: 3.3

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

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