An application that uses the EnableStatic method in the Win32_NetworkAdapterConfiguration class cannot set a static IP address for a network adapter on a Windows 7-based or Windows Server 2008 R2-based computer

Symptoms

Consider the following scenario:

  • You have a computer that is running Windows 7 or Windows Server 2008 R2.

  • You use an application that uses the EnableStatic method in the Win32_NetworkAdapterConfiguration class to programmatically set a static IP address for a network adapter.

In this scenario, the operation may regularly fail. For example, you use some virtual private networking (VPN) tools to programmatically set a static IP address for a network adapter. In this example, the operation fails.

Cause

This issue occurs because the EnableStatic method may occasionally fail, and if the application does not capture the following error code, the operation fails:

NETCFG_E_NO_WRITE_LOCK (0x8004A024)

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 website:

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

To apply this hotfix, you must be running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

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

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 files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.1.760
    0.
    20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.
    21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • 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

Cimwin32.dll

6.1.7600.20938

1,340,928

02-Apr-2011

04:46

Cimwin32.dll

6.1.7601.21696

1,342,976

02-Apr-2011

04:23

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

File name

File version

File size

Date

Time

Cimwin32.dll

6.1.7600.20938

2,055,168

02-Apr-2011

05:19

Cimwin32.dll

6.1.7601.21696

2,058,752

02-Apr-2011

05:09

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

File name

File version

File size

Date

Time

Cimwin32.dll

6.1.7600.20938

4,280,320

02-Apr-2011

04:05

Cimwin32.dll

6.1.7601.21696

4,280,320

02-Apr-2011

04:10

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 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

For more information about the same issue that occurs on the Windows Vista-based computer, click the following article number to view the article in the Microsoft Knowledge Base:

950134Description of on a Windows Vista-based computer, an application that uses the EnableStatic method of the Win32_NetworkAdapterConfiguration class may not always set a static IP address for a network adapter For more information about the EnableStatic method, vista the following Microsoft Developer Network (MSDN) website:
General information about the EnableStatic method

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_442b95e5134f4d4eabe07365ef6e099b_31bf3856ad364e35_6.1.7600.20938_none_8d0890bda79c2953.manifest

File version

Not applicable

File size

719

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

X86_a94bda832d62795f901a825b4744f000_31bf3856ad364e35_6.1.7601.21696_none_8557b9b079da4094.manifest

File version

Not applicable

File size

719

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

X86_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20938_none_d043fe178055b2d3.manifest

File version

Not applicable

File size

5,224

Date (UTC)

02-Apr-2011

Time (UTC)

05:18

File name

X86_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7601.21696_none_d1e7791b7dae9690.manifest

File version

Not applicable

File size

5,224

Date (UTC)

02-Apr-2011

Time (UTC)

04:53

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

File name

Amd64_0cfabdc498d9e56994a042ad7d3027da_31bf3856ad364e35_6.1.7601.21696_none_edcbdbca53ac4a5f.manifest

File version

Not applicable

File size

723

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

Amd64_ba86f886057c7a2c60e7e0099c343daa_31bf3856ad364e35_6.1.7600.20938_none_0e0d5be400abb12a.manifest

File version

Not applicable

File size

723

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

Amd64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20938_none_2c62999b38b32409.manifest

File version

Not applicable

File size

5,228

Date (UTC)

02-Apr-2011

Time (UTC)

06:07

File name

Amd64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7601.21696_none_2e06149f360c07c6.manifest

File version

Not applicable

File size

5,228

Date (UTC)

02-Apr-2011

Time (UTC)

05:46

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

File name

Ia64_41fd702d779f608441725529fc0f72f3_31bf3856ad364e35_6.1.7600.20938_none_a901158818565232.manifest

File version

Not applicable

File size

721

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

Ia64_ece9f53bb6080945eee6e105a3857353_31bf3856ad364e35_6.1.7601.21696_none_0facd514808e69af.manifest

File version

Not applicable

File size

721

Date (UTC)

05-Apr-2011

Time (UTC)

23:48

File name

Ia64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20938_none_d045a20d8053bbcf.manifest

File version

Not applicable

File size

5,226

Date (UTC)

02-Apr-2011

Time (UTC)

06:07

File name

Ia64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7601.21696_none_d1e91d117dac9f8c.manifest

File version

Not applicable

File size

5,226

Date (UTC)

02-Apr-2011

Time (UTC)

05:47

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