Article ID: 929852 - Last Review: June 29, 2010 - Revision: 5.0

How to disable certain Internet Protocol version 6 (IPv6) components in Windows

Vista, Windows 7 and Windows Server 2008

This article describes step-by-step instructions for how to disable certain Microsoft Internet Protocol

version 6 (IPv6) components in Windows 7, Windows Server 2008, and Windows Vista. To disable IPv6 components, you must be logged

on to the computer as a member of the Administrators group, or your user account must be granted permissions to edit the Windows

registry.

Important This section, method, or task contains steps that tell you how to modify the registry.

However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully.

For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more

information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge

Base: 322756 (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

You may use one of the following Fix it Solutions to enable or selectively disable IPv6 components or you may enable and disable the

components by yourself. To have us enable or selectively disable IPv6 components for you, go to the "Fix it for me" section. If you would

rather enable or selectively disable IPv6 components yourself, go to the "Let me fix it myself" section.

Fix it for me

To enable or selectively disable IPv6 components automatically, click the Fix this problem link. Then click Run in the File Download

dialog box, and follow the steps in this wizard.

Note This wizard may be in English only; however, the automatic fix also works for other language versions of Windows.

Note If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can

run it on the computer that has the problem.

Let me fix it myself

To disable certain IPv6 components yourself, follow these steps:

Click Start , type regedit in the Start Search box, and then click regedit.exe in the Programs list.1.

In the User Account Control dialog box, click Continue.2.

In Registry Editor, locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM

\CurrentControlSet\Services\Tcpip6\Parameters\

3.

Double-click DisabledComponents to modify the DisabledComponents entry.

Note If the DisabledComponents entry is unavailable, you must create it. To do this, follow these steps:

In the Edit menu, point to New, and then click DWORD (32-bit) Value.a.

Type DisabledComponents, and then press ENTER.b.

Double-click DisabledComponents.c.

4.

Type any one of the following values to configure the IPv6 protocol, and then click OK:

Type 0 to enable all IPv6 components.

Note The value "0" is the default setting.

a.

Type 0xffffffff to disable all IPv6 components, except the IPv6 loopback interface. This value also configures Windows Vista

to use Internet Protocol version 4 (IPv4) instead of IPv6 in prefix policies.

b.

Type 0x20 to use IPv4 instead of IPv6 in prefix policies.c.

Type 0x10 to disable native IPv6 interfaces.d.

Type 0x01 to disable all tunnel IPv6 interfaces.e.

Type 0x11 to disable all IPv6 interfaces except for the IPv6 loopback interface.f.

5.

INTRODUCTION

MORE INFORMATION

Enable IPv6Use IPv4 instead ofIPv6 in prefix policies

Disable native IPv6interfaces

Disable tunnel IPv6interfaces

Disable IPv6 except forloopback interface

Fix this problemMicrosoft Fix it 50440

Fix this problemMicrosoft Fix it 50441

Fix this problemMicrosoft Fix it 50442

Fix this problemMicrosoft Fix it 50443

Fix this problemMicrosoft Fix it 50444

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Notes

Using a value other than 0x0 or 0x20 will cause the Routing and Remote Access service to fail after this change goes into effect.

You must restart your computer for these changes to take effect.

Note Administrators must create an ADMX file in order to expose the settings in step 5 in a Group Policy setting.

For more information about how to manage Group Policy settings by using ADMX files, visit the following

Microsoft TechNet Web site: http://technet2.microsoft.com/WindowsVista/en/library/02633470-396c-4e34-971a-

0c5b090dc4fd1033.mspx (http://technet2.microsoft.com/WindowsVista/en/library/02633470-396c-4e34-971a-0c5b090dc4fd1033.mspx) For more

information about the Windows registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 (http://support.microsoft.com/kb/256986/ ) Description of the Microsoft Windows registry

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REFERENCES

How to disable certain Internet Protocol version 6 (IPv6) components i... http://support.microsoft.com/kb/929852

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