In a Network Access Protection (NAP) architecture, a Windows Vista-based client computer loses network connectivity after you run the "gpupdate /force" command

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On a network, you deploy a Network Access Protection (NAP) architecture. When you connect to this network from a Windows Vista-based client computer, you can access the network resource correctly. However, after you run the gpupdate /force command to reapply the Group Policy settings, the client computer may lose network connectivity.

This issue occurs when the following conditions are true:
  • Both IPsec policy and connection security rules are configured for NAP architecture.
  • The value of the IKEFlags registry entry is set to 1C in hexadecimal.
    Note This registry entry is located under the following registry subkey:

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 have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, 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, 32-bit versions
File nameFile versionFile sizeDateTimePlatform
Update.mumNot Applicable2,01102-Oct-200717:13Not Applicable
X86_72556128a214acddc1fbb4283429c69c_31bf3856ad364e35_6.0.6000.20691_none_bedd4aae2f903b3c.manifestNot Applicable70402-Oct-200717:13Not Applicable
X86_microsoft-windows-network-security_31bf3856ad364e35_6.0.6000.20691_none_cb677d2646c9fe8b.manifestNot Applicable131,36602-Oct-200717:13Not Applicable
Wfp.mofNot Applicable81427-Sep-200723:32Not Applicable
Wfp.tmfNot Applicable115,17302-Oct-200702:25Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_3c13aeaa48e32a82e06b6bb18dec46e7_31bf3856ad364e35_6.0.6000.20691_none_f57d5a3aea26278a.manifestNot Applicable70802-Oct-200717:13Not Applicable
Amd64_e390469be74b7ed6d68983d536c88712_31bf3856ad364e35_6.0.6000.20691_none_9b164bf21e348aca.manifestNot Applicable70802-Oct-200717:13Not Applicable
Amd64_microsoft-windows-network-security_31bf3856ad364e35_6.0.6000.20691_none_278618a9ff276fc1.manifestNot Applicable131,41002-Oct-200717:17Not Applicable
Package_1_for_kb943129~31bf3856ad364e35~amd64~~ Applicable1,80502-Oct-200717:13Not Applicable
Package_2_for_kb943129~31bf3856ad364e35~amd64~~ Applicable2,02202-Oct-200717:13Not Applicable
Update.mumNot Applicable1,92502-Oct-200717:13Not Applicable
Wow64_microsoft-windows-network-security_31bf3856ad364e35_6.0.6000.20691_none_31dac2fc338831bc.manifestNot Applicable73,68502-Oct-200717:17Not Applicable
Wfp.mofNot Applicable81428-Sep-200717:24Not Applicable
Wfp.tmfNot Applicable115,07302-Oct-200702:45Not Applicable
Wfp.mofNot Applicable81427-Sep-200723:32Not 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.
More information
NAP is a new platform that does the following:
  • NAP performs computer health policy validation.
  • NAP guarantees ongoing compliance with health policies.
  • NAP optionally restricts the access of computers that do not comply with system health requirements until the health state of these computers can be corrected.
For more information about NAP, visit the following Microsoft TechNet Web site: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: 943129 - Last Review: 01/16/2015 09:51:42 - Revision: 3.0

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

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