"Stop 0xC2 (BAD_POOL_CALLER)" error may occur intermittently on a server that is running Routing and Remote Access with NAT enabled under Windows 2000

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A Microsoft Windows 2000-based server that is running the Routing and Remote Access service and that has network address translation (NAT) enabled may intermittently stop responding. The following Stop error message may appear:
A problem has been detected and Windows has been shut down to prevent damage to your computer...Technical information:
*** STOP: 0x000000C2 (0xParameter_1, 0xParameter_2, 0xParameter_3, 0xParameter_4)
Note The four parameters in this error message may vary, depending on the cause of the Stop error.

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.


No prerequisites are required.

Restart requirement

You must restart your 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) 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   -------------------------------------------------------   01-Oct-2003  22:24  5.0.2195.6861  67,184  Ipnat.sys
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For additional information about how hotfix 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
Stop 0xC2 RRAS

Article ID: 829788 - Last Review: 10/26/2013 08:49:00 - Revision: 3.0

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows 2000 Advanced Server
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