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Symptoms

On a computer that is running Windows Server 2008 R2, the DHCP Server service may stop responding and then does not respond to any DHCP requests.

Cause

This issue occurs because a structure that is used by the DHCP Server service is corrupted.

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

To apply this hotfix, you must be running Windows Server 2008 R2. Additionally, the DHCP Server role must be installed.

Restart requirement

You must restart the computer after you apply this hotfix.To avoid a restart, stop the DHCP Server service before you install this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) 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 Server 2008 R2 file information notes
  • 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" 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 x64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Dhcpserver.events.xml

Not Applicable

600

10-Jun-2009

20:34

Not Applicable

Dhcpssvc.dll

6.1.7600.20713

729,088

14-May-2010

01:52

x64

Workaround

To work around this issue, restart the DHCP Server service manually.

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

Additional file information

Additional file information for Windows Server 2008 R2

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

File name

Amd64_be2119d687192c19ad489df4eb836d9a_31bf3856ad364e35_6.1.7600.20713_none_209ec1678ada53be.manifest

File version

Not Applicable

File size

709

Date (UTC)

14-May-2010

Time (UTC)

19:56

Platform

Not Applicable

File name

Amd64_microsoft-windows-dhcpserverruntime_31bf3856ad364e35_6.1.7600.20713_none_85d21ca9ca228901.manifest

File version

Not Applicable

File size

194,101

Date (UTC)

14-May-2010

Time (UTC)

04:16

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,681

Date (UTC)

14-May-2010

Time (UTC)

19:56

Platform

Not Applicable

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