Error message on a Windows Server 2003 SP1 or SP2-based computer that is configured to use the Network Address Translation (NAT) functionality: "STOP: 0x000000D1 (parameter1 , 0x00000002, 0x00000000, 0xf27b4e8e)"

On a Microsoft Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2)-based computer that has the Routing and Remote Access service enabled and configured to use the Network Address Translation (NAT) functionality. When the Windows Server 2003-based computer is under heavy load, you may experience one of the following symptoms:

• Your computer automatically restarts.
• After you log on, you receive the following error message:
  Microsoft Windows
  The system has recovered from a serious error.
  A log of this error has been created.
  Please tell Microsoft about this problem.
  We have created an error report that you can send to help us improve Microsoft Windows. We will treat this report as confidential and anonymous.
  To see what data this error report contains, click here .
  If the error message still appears and if you want to see the data that the error report contains, click the click here link at the bottom of the message box. Then, you see error signature information that may resemble to the following:

  BCCode : 000000D1 BCP1 : parameter1 BCP2 : 0x00000002 BCP3 : 0x00000000 BCP4 : 0xf27b4e8e OSVer : 5_2_3718 SP : 0_0 Product : 272_3

• You receive the following error message:
  A problem has been detected and Windows has been shut down to prevent damage to your computer...
  Technical information:
  
  *** STOP: 0x000000D1 (0xparameter1, 0x00000002, 0x00000000, 0xf27b4e8e)
  IRQL_NOT_LESS_OR_EQUAL Ipnat.sys
• When you view the System log in Event Viewer, you may notice an event ID 1003 entry with information that resembles the following:
  Date: date
  Source: System
  Error Time: time
  Category: (102)
  Type: Error
  Event ID: 1003
  User: N/A
  Computer: COMPUTER
  Description: Error code 000000D1, parameter1 parameter1, parameter2 0x00000002, parameter3 0x00000000, parameter4 0xf27b4e8e. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: 53 79 73 74 65 6d 20 45 System E 0008: 72 72 6f 72 20 20 45 72 rror Er 0010: 72 6f 72 20 63 6f 64 65 ror code 0018: 20 30 30 30 30 30 30 35 00000D1 0020: 30 20 20 50 61 72 61 6d 0 Param 0028: 65 74 65 72 73 20 66 66 eters ff 0030: 66 66 66 66 64 31 2c

Notes

• The symptoms of a Stop error vary according to your computer's system failure options. For more information about how to configure system failure options, click the following article number to view the article in the Microsoft Knowledge Base:
  307973  (http://support.microsoft.com/kb/307973/ ) HOW TO: Configure Recovery Options in Windows
• The four parameters that are inside the parentheses of the technical information for the Stop error vary according to the computer's configuration.
• Not all Stop 0x000000D1 errors are caused by the problem that is described in this article.

The problem may occur if a user uses IP preservation in a Windows Server 2003-based computer that is under heavy load and uses Windows Server 2003 SP1 or Windows Server 2003 SP2. The IP NAT driver may incorrectly process the reset interface request in Windows Server 2003 SP1 and in Windows Server 2003 SP2.

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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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.

Prerequisites

To apply this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2) installed on the computer. For more informationabout how to obtain Windows Server 2003 Service Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2), click the following article number to view the article in the Microsoft Knowledge Base:

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 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 item in Control Panel. Windows Server 2003 with SP1, x86-based versionsWindows Server 2003 with SP1, x64-based versionsWindows Server 2003 with SP1, Itanium-based versions

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:

Technical support for x64-based versions of Microsoft Windows

If your hardware came with a Microsoft Windows x64 edition already installed, your hardware manufacturer provides technical support and assistance for the Windows x64 edition. In this case, your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation by using unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with a Windows x64 edition. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware. If you purchased a Windows x64 edition such as a Microsoft Windows Server 2003 x64 edition separately, contact Microsoft for technical support.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site: For product information about x64-based versions of Microsoft Windows Server 2003, visit the following Microsoft Web site: