Error message when you use an IPsec tunnel mode connection to communicate from a Windows Vista-based computer to another computer: "STOP 0x000000D1 DRIVER_IRQL_NOT_LESS_OR_EQUAL"

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When you use an Internet Protocol security (IPsec) tunnel mode connection to communicate from a Windows Vista-based computer to another computer, the Windows Vista-based computer may restart. Also, you may receive an error message that resembles the following:
STOP 0x000000D1 (parameter1, parameter2, parameter3, parameter4)
This problem occurs if you install antivirus filter drivers on the Windows Vista-based computer.
This problem occurs because of an error in the IPsec component. The IPsec component incorrectly dereferences some specific memory that is accessed as a network packet.

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

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.


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 previously released hotfixes.

Registry information

To use one of the hotfixes in this package, you do not have to make any changes to the registry.

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 Vista, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Update.mumNot applicable2,67907-Mar-200718:37Not applicable
X86_24bf0273fbf35bbcd0434b86e60a7e97_31bf3856ad364e35_6.0.6000.20551_none_b37733fe022d9b52.manifestNot applicable70407-Mar-200718:37Not applicable
X86_d012dfc4c8cf16500baa86f7bafb6989_31bf3856ad364e35_6.0.6000.20551_none_298f2691411de3de.manifestNot applicable70807-Mar-200718:37Not applicable
X86_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.0.6000.20551_none_5509b7dcd16c40f6.manifestNot applicable4,16207-Mar-200718:39Not applicable
X86_microsoft-windows-network-security_31bf3856ad364e35_6.0.6000.20551_none_cb92baf046a991a0.manifestNot applicable131,36607-Mar-200718:39Not applicable
Wfp.mofNot applicable81207-Jan-200705:32Not applicable
Wfp.tmfNot applicable115,17307-Mar-200702:09Not applicable
Windows Vista, x64-based versions
File nameFile versionFile sizeDateTimePlatform
Amd64_d00a6d860e443a63cefea139bada74e1_31bf3856ad364e35_6.0.6000.20551_none_cceb70191e8dbd1f.manifestNot applicable71207-Mar-200718:37Not applicable
Amd64_eb8e77ad6ad90193e7ef2724c467cddf_31bf3856ad364e35_6.0.6000.20551_none_1ebf89beda91ecd1.manifestNot applicable70807-Mar-200718:37Not applicable
Amd64_microsoft-windows-netio-infrastructure_31bf3856ad364e35_6.0.6000.20551_none_b128536089c9b22c.manifestNot applicable4,17007-Mar-200719:27Not applicable
Amd64_microsoft-windows-network-security_31bf3856ad364e35_6.0.6000.20551_none_27b15673ff0702d6.manifestNot applicable131,41007-Mar-200719:27Not applicable
Update.mumNot applicable2,69507-Mar-200718:37Not applicable
Wfp.mofNot applicable81207-Jan-200705:32Not applicable
Wfp.tmfNot applicable115,07307-Mar-200702:35Not applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
For more information, 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: 931365 - Last Review: 12/09/2015 09:22:18 - Revision: 3.0

Windows Vista Enterprise 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Business, Windows Vista Business 64-bit Edition, Windows Vista Enterprise, Windows Vista Home Premium, Windows Vista Ultimate

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