You may encounter unexpected behavior when you use multiple IPv4 addresses on a computer that is running Windows 7 or Windows Server 2008 R2

Symptoms

You configure a computer that is running Windows 7 or Windows Server 2008 R2 to use multiple IPv4 addresses. However, you may encounter some unexpected behavior during the startup process. For example, the computer crashes or stops responding (hangs) during the startup process.

Cause

This issue occurs because of an error in the Tcpip.sys component. If there is more than one IPv4 address to be configured for the computer, the OID_GEN_NETWORK_LAYER_ADDRESSES object that passes the IPv4 address will contain incorrect information.

Resolution

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 the problem described in this article. 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:

http://support.microsoft.com/contactus/?ws=supportNote 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

There are no prerequisites for applying this hotfix.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information notes


Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Fwpkclnt.sys

6.1.7600.16385

187,472

14-Jul-2009

01:20

x86

Tcpip.sys

6.1.7600.20785

1,289,088

20-Aug-2010

04:34

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Fwpkclnt.sys

6.1.7600.16385

288,336

14-Jul-2009

01:47

x64

Tcpip.sys

6.1.7600.20785

1,888,640

20-Aug-2010

05:50

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Fwpkclnt.sys

6.1.7600.16385

482,896

14-Jul-2009

01:58

IA-64

Tcpip.sys

6.1.7600.20785

3,779,456

20-Aug-2010

04:28

IA-64

Status

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

More Information

For more information about the OID_GEN_NETWORK_LAYER_ADDRESSES object, visit the following Microsoft Developer Network (MSDN) website:

General information about the "OID_GEN_NETWORK_LAYER_ADDRESSES" objectFor more information about software update terminology, 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

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

X86_7226241cd72825f5823a89791361b3ff_31bf3856ad364e35_6.1.7600.20785_none_113f7ed835ef9230.manifest

File version

Not applicable

File size

702

Date (UTC)

20-Aug-2010

Time (UTC)

18:24

Platform

Not applicable

File name

X86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.20785_none_b37e0af2e0d76da6.manifest

File version

Not applicable

File size

3,780

Date (UTC)

20-Aug-2010

Time (UTC)

18:26

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_72d25197156e45939d740e85817cd402_31bf3856ad364e35_6.1.7600.20785_none_73caa74a8cfdab91.manifest

File version

Not applicable

File size

706

Date (UTC)

20-Aug-2010

Time (UTC)

18:24

Platform

Not applicable

File name

Amd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.20785_none_0f9ca6769934dedc.manifest

File version

Not applicable

File size

3,784

Date (UTC)

20-Aug-2010

Time (UTC)

18:29

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_171a01dabd1d7a5f626b2db60ee31572_31bf3856ad364e35_6.1.7600.20785_none_c9f1810e5bb96cff.manifest

File version

Not applicable

File size

704

Date (UTC)

20-Aug-2010

Time (UTC)

18:24

Platform

Not applicable

File name

Ia64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.1.7600.20785_none_b37faee8e0d576a2.manifest

File version

Not applicable

File size

3,782

Date (UTC)

20-Aug-2010

Time (UTC)

18:24

Platform

Not applicable

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