This article describes an update that is available to support the DFS Namespaces Client failback feature on computers that are running Microsoft Windows Server 2003 with Service Pack 1 (SP1) or Microsoft Windows XP with Service Pack 2 (SP2).

Note Service Pack 1 is included in x64-based versions of Windows Server 2003.

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In Microsoft Windows Server 2003, the Distributed File System technology is renamed to DFS Namespaces. In Windows Server 2003 SP1 and Windows Server 2003 R2, some new DFS Namespaces features are available. One of these features is named Client failback. You can use the new user interface that is available in Windows Server 2003 SP1 and in Windows Server 2003 R2 together with the update that is described in this Microsoft Knowledge Base article to configure client computers to fail back to a preferred, local server if the connection to that local server is restored.

For more information about the DFS Namespaces features, visit the following Microsoft Web site:

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Windows Server 2003

For more information about the latest service pack for Windows Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:

Update information

The following files are available for download from the Microsoft Download Center:

Download the 32-bit Windows Server 2003 package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=35B17F93-A456-4E3F-A811-D3DA41B92A24)

Download the x64-based Windows Server 2003 package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=2DE3EA37-3558-448C-A2BE-D6C1F846453C)

Download the Itanium-based Windows Server 2003 package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=201E2A70-18F2-4F4C-8EC8-CB899FC84E5D)

Release Date: November 30, 2005

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: 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.

Prerequisites

To apply this update, you must have Windows Server 2003 SP1 installed on the computer.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this update 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 tool in Control Panel.Windows Server 2003, 32-bit versions

File name	File version	File size	Date	Time	Platform
Mup.sys	5.2.3790.2482	100,352	07-Jul-2005	01:05	x86

Windows Server 2003, x64-based versions

File name	File version	File size	Date	Time	Platform
Mup.sys	5.2.3790.2482	178,688	06-Jul-2005	11:58	x64

Windows Server 2003, Itanium-based versions

File name	File version	File size	Date	Time	Platform
Mup.sys	5.2.3790.2482	309,248	06-Jul-2005	11:58	IA-64

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Windows XP

Update information

The following files are available for download from the Microsoft Download Center:

Download the 32-bit Windows XP package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=7D3F51E3-2D33-48C4-8B5F-FE2345B0A35E)

Download the x64-based Windows XP package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=7A7D15A0-30DF-4B0E-8DAC-332090516B7F)

Release Date: November 30, 2005

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: 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.

Prerequisites

To apply this update, you must have Windows XP SP2 installed on the computer.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this update 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 tool in Control Panel.

File name	File version	File size	Date	Time	Platform	SP requirement
Mup.sys	5.1.2600.2756	104,704	09-Sep-2005	02:24	x86	SP2
Netapi32.dll	5.1.2600.2756	336,896	09-Sep-2005	03:47	x86	SP2

For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

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