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Article ID: 953761 - Last Review: October 8, 2011 - Revision: 3.0

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SYMPTOMS

Consider the following scenario:
  • You have Windows XP Service Pack 3 (SP3)-based client computers in a network environment.
  • In this network environment, you configure a Dynamic Host Configuration Protocol (DHCP) server to offer DHCP option 43 (for Microsoft vendor-specific options).
In this scenario, some DHCP options are not recognized on the client computer.

This problem makes some services fail. These services include the time server service and the Network Policy Server (NPS) service. Additionally, this problem also affects some third-party options.

If you run the ipconfig /all command to view the TCP/IP configuration when this problem occurs, some fields may become empty. These fields include the DHCP Server field and the Primary WINS Server field.

CAUSE

This problem occurs when option 43 does not appear at the end of the option list in the DHCP packet.

A Windows XP SP3-based client computer assumes that option 43 will always appear at the end of the option list. Therefore, the client does not parse any DHCP options that appear after option 43.

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 this specific problem.

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, submit a request to 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=support (http://support.microsoft.com/contactus/?ws=support)
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.

Prerequisites

To apply this hotfix, you must have Windows XP Service Pack 3 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Registry information

To use one of the hotfixes in this package, 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 XP with SP3, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Dhcpcsvc.dll5.1.2600.5614126,97603-Jun-200814:01x86

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 DHCP option 43, visit the following Microsoft Web site:
http://msdn.microsoft.com/en-us/library/cc227331.aspx (http://msdn.microsoft.com/en-us/library/cc227331.aspx)
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

APPLIES TO
  • Microsoft Windows XP Service Pack 3
Keywords: 
kbautohotfix kbexpertiseadvanced kbfix kbqfe KB953761
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