When you run Network Map on a Windows Vista-based computer,
computers that are running Windows XP do not appear on the network
This article describes an update that will make 32-bit Windows
XP-based computers appear in Network Map on Windows Vista-based computers. For
more information about how to set up or to troubleshoot networking between
Windows Vista and Windows XP, see the
This problem occurs if the Link-Layer Topology Discovery
(LLTD) Responder component is not installed on the Windows XP-based
Network Map in Windows Vista makes network diagrams of the
connections between network devices that can be used to troubleshoot
connectivity problems. Network Map uses a discovery protocol called Link-Layer
Topology Discovery (LLTD) that queries other devices on the network to
determine how the network is organized.
Windows Vista includes the
software components that implement the LLTD protocol. For other devices on the
network to be displayed on the map, they must enable a discovery protocol that
can respond to the mapping requests from the Windows Vista-based
The following file is available for download from the Microsoft Download Center:
Download the Link Layer Topology Discovery (LLTD) Responder package now.
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For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
Hotfix for Windows XP Service Pack 3 (SP3)
To resolve this problem, install the hotfix that is described in
this section. The hotfix installs the LLTD Responder component on Windows
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: 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.
To apply this hotfix, you must have Windows XP SP3 installed on a 32-bit computer.
You must restart the computer after you apply this hotfix.
Update replacement information
This hotfix does not replace any other hotfixes.
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.
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|File name||File version||File size||Date||Time||Platform||SP requirement|
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.
For more information about how to set up or
to troubleshoot networking between Windows Vista and Windows XP, visit the
following Microsoft Web sites.
How to troubleshoot network connection problems
Windows Vista networking
File and printer sharing in Windows Vista
How to share and to set permissions for folders and for files by using Windows XP
For more information about software update terminology, click the
following article number to view the article in the Microsoft Knowledge Base:
Description of the standard terminology that is used to describe Microsoft software updates
If the resources that are listed in this section do
not help you resolve the problem, or if you experience symptoms that differ
from those that are described in this article, search the Microsoft Knowledge
Base for more information. To search the Microsoft Knowledge Base, visit the
following Microsoft Web site:
Next, type the text of the error message that you receive or a
description of the problem in the search box.Note
If the problem is not resolved, unfortunately this content is
unable to help you any further. Therefore, you might want to ask someone for
help, or you might want to visit the following Microsoft Web site: