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You may receive DFS referrals that contain a list of random DFS targets, random SYSVOL or NETLOGON referrals, or experience slow performance when you access a shared folder in a DFS namespace on a Windows Server 2003-based computer
Article ID: 905846 - View products that this article applies to.
When you use a client computer to access a shared folder in a Distributed File System (DFS) namespace that is hosted on a Microsoft Windows Server 2003 Service Pack 1 (SP1)-based computer, you may experience the following symptoms:
These problems occur because the DFS server receives an incorrect DFS client IP address from the SMB Service.
When a DFS server receives a referral request from a client, the DFS server uses the IP address of the client to determine the client’s site. The DFS server sorts the list of target servers in the referral response in terms of increasing site cost from the DFS client to the target server.
When the SMB Service server provides an incorrect DFS client IP address to the Windows Server 2003-based DFS server, the client receives a referral that contains a list of DFS targets that are random or in non-optimal order in terms of the Active Directory site cost from DFS client to DFS targets.
Service pack informationTo resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/889100/ )How to obtain the latest service pack for Windows Server 2003
Hotfix informationA 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=supportNote 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.Important You must install this hotfix on the DFS server computer.
PrerequisitesTo apply this hotfix, you must have Windows Server 2003 SP1 installed on the computer.
Note Windows Server 2003 SP1 is included in x64-based versions of Windows Server 2003.
Restart requirementYou must restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any other hotfixes.
File informationThe 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 tool in Control Panel.
Windows Server 2003, 32-bit versions with Service Pack 1
Date Time Version Size File name -------------------------------------------------------- 11-Aug-2005 01:12 5.2.3790.2506 360,448 Srv.sys
Windows Server 2003, 64-bit Itanium-based versions with Service Pack 1
Date Time Version Size File name Platform -------------------------------------------------------------------- 11-Aug-2005 05:57 5.2.3790.2506 1,108,992 Srv.sys
Windows Server 2003, x64-based versions
Date Time Version Size File name -------------------------------------------------------------- 11-Aug-2005 19:28 5.2.3790.2506 670,208 Srv.sys
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 Server 2003 Service Pack 2.
You can look up the DFS internal information on a client computer. To do this, type the following command at a command prompt:
dfsutil /PKTINFOIf a bad DFS referral is received by a client computer, the dfsutil /PKTINFO command displays an output that is similar to the following:
Note In this example output, the first entry is “servername.domainname.company.com.”
--mup.sys--2 entries... Entry: \domainname.company.com\DFSrootShortEntry: \domainname.company.com\DFSrootExpires in 300 secondsUseCount: 0 Type:0x81 ( REFERRAL_SVC DFS ) 0:[\servername.domainname.company.com\DFSroot] State:0x19 ( ACTIVE ) 1:[\servername2.domainname.company.com\DFSroot] State:0x09 ( )
You can find the non-optimal ordering from the referral cache. To do this, examine the first entry and verify whether this server is located in the client computer’s site or in a remote site. To view the remote server names, examine the network traces. You can view the remote server names in the referral response frame.
To verify random SYSVOL or NETLOGON referrals in the referral cache, verify whether the first domain controller that is listed in the referral cache is located in the client computer's site or in a remote site.
For more information about how to capture network traffic, click the following article number to view the article in the Microsoft Knowledge Base:
SMB: R transact2 NT Get DFS Referral (response to frame x) Referrals Referral Version: 3 Size: 34 Server Type: SMB Server (1) Flags: 0x0000 Proximity: 300 TTL: 0 Path Offset: 1054 Alt Path Offset: 1114 Node Offset: 1174 Path: \domainname.company.com\DFSroot Alt Path: \domainname.company.com\DFSroot Node: \servername.domainname.company.com\DFSroot <====== is this server in the client's site?
(http://support.microsoft.com/kb/812953/ )How to use Network Monitor to capture network traffic
For more information about DFS and DFS site costing, visit the following Microsoft Web sites:
831201For more information about a hotfix that is available to support DFS Namespaces Client failback, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/831201/ )An update for Windows Server 2003 and Windows 2000 Server makes it possible to put the logon server at the top of the DFS referrals list
898900For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/898900/ )A hotfix is available to support the DFS Namespaces Client failback
(http://support.microsoft.com/kb/258262/ )How to write a DWORD to the registry
For more information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Technical support for x64-based versions of Microsoft WindowsYour hardware manufacturer provides technical support and assistance for x64-based versions of Windows. Your hardware manufacturer provides support because an x64-based version of Windows was included with your hardware. Your hardware manufacturer might have customized the installation of Windows with unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with your x64-based version of Windows. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware.
For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site:
http://www.microsoft.com/windowsxp/64bit/default.mspxFor product information about x64-based versions of Microsoft Windows Server 2003, visit the following Microsoft Web site:
Article ID: 905846 - Last Review: October 9, 2011 - Revision: 6.0