You may receive a "STOP 0x000000C2 BAD_POOL_CALLER" error message when you use ATM network services in Windows 2000

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in Microsoft Windows 2000, you may receive an error message that is similar to the following when you use asynchronous transfer mode (ATM) network services:
STOP 0x000000C2 BAD_POOL_CALLER (0x00000007, 00000b8a, 8479ae80, 8479ae88)
In this error message, the parameters after "0x00000007" vary.
This problem occurs because of a race condition that occurs in the ATM local area network (LAN) emulation device driver (Atmlane.sys).

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


This hotfix does not require any prerequisites.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version           Size  File name   --------------------------------------------------------   12-Jul-2005  03:23  5.0.2195.7059   48,656  Atmlane.sys   25-Feb-2005  05:13       371,936  Updspapi.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how software update packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New file naming schema for Microsoft Windows software update packages
For more information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 900623 - Last Review: 12/09/2015 02:39:12 - Revision: 2.0

Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Server, Microsoft Windows 2000 Professional Edition

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