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Article ID: 945222 - Last Review: November 27, 2007 - Revision: 1.1

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SYMPTOMS

Consider the following scenario:
  • In a network environment, you deploy a cascaded Distributed File System (DFS) design.
  • You configure DFS links that point to network shares.
  • You update the network shares to which the DFS links point.
In this scenario, a Windows XP Service Pack 2 (SP2)-based DFS client computer does not obtain the updated information about the link target from the DFS root. Therefore, you cannot access the correct network share.

In this scenario, you must restart the client computer to update the information about the DFS link target.

CAUSE

This problem occurs if the DFS cache is not updated.

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. 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=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 SP2 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, 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 SP2, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mup.sys5.1.2600.3253105,34414-Nov-200711:02x86

WORKAROUND

To work around this problem, update the DFS cache by running the following command:
dfsutil /pktflush

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

If you have to create more than 5,000 links in a domain-based DFS namespace, you can create multiple DFS namespaces that meet the recommended sizes. Then, you can link these namespaces together. This method is known as a cascaded DFS design, and the links that point to another namespace are called interlinks.

For more information about DFS, visit the following Microsoft Web site:
http://technet2.microsoft.com/windowsserver/en/library/20ffb860-f802-455c-9ca2-5194f79a9eb41033.mspx?mfr=true (http://technet2.microsoft.com/windowsserver/en/library/20ffb860-f802-455c-9ca2-5194f79a9eb41033.mspx?mfr=true)
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 Professional
Keywords: 
kbautohotfix kbexpertiseadvanced kbfix kbqfe kbhotfixserver KB945222
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