The ClassID value may be lost or overwritten when you set the ClassID value for a DHCP-enabled network adapter on a Windows XP-based computer (837206)


The information in this article applies to:

  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition

SYMPTOMS

When you set the ClassID value for a DHCP-enabled network adapter on a Microsoft Windows XP-based computer, the ClassID value may be lost or overwritten and the network adapter may not receive the correct DHCP options.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel. 
x86:

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   02-Apr-2004  16:40  5.1.2600.1351     103,936  Dhcpcsvc.dll     

IA-64:

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   02-Apr-2004  16:35  5.1.2600.1351     322,048  Dhcpcsvc.dll     IA-64
   02-Apr-2004  16:40  5.1.2600.1351     103,936  Wdhcpcsvc.dll    x86

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

MORE INFORMATION

For additional information, 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



DHCP ClassID values are an optional mechanism in DHCP. The ClassID value permits you to configure options for groups (or "classes") of clients. If user classes are configured, clients can receive DHCP options depending on the user class that they belong to.

REFERENCES

For additional information about using wildcard characters to set the ClassID on multiple network adapters, click the following article number to view the article in the Microsoft Knowledge Base:

830358 You cannot use IPCONFIG with a wildcard character to set the ClassIDs of multiple network adapters

Modification Type:MinorLast Reviewed:10/28/2005
Keywords:kbHotfixServer kbQFE kbQFE kbWinXPsp2fix kbWinXPpreSP2fix kbfix kbbug KB837206 kbAudITPRO
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