Microsoft KB Archive/873454

= The DNS server waits for a recursion timeout before it sends a &quot;Server Failure&quot; response to the client in Windows 2000 =

Article ID: 873454

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When you try to resolve a host name address by using the Domain Name System (DNS) fully qualified domain name (FQDN), the Microsoft Windows 2000 Server-based DNS server may take as long as 15 seconds to send a &quot;Server Failure&quot; response to the DNS client computer.



CAUSE
This problem occurs when all the following conditions are true:
 * A client submits a DNS name query to the Windows 2000 DNS server for a host that cannot be resolved.
 * The Windows 2000 DNS server is configured to use either forwarder servers or root hint servers.
 * The Windows 2000 DNS server forwards the DNS name query to another DNS server that is either a forwarder server or a root hint server.

When the Windows 2000 DNS server must forward a name resolution request to another DNS server, and the Windows 2000 DNS server receives a &quot;Server Failure&quot; response from that server, the Windows 2000 DNS server ignores the response and does not immediately return the response to the client. The Windows 2000 DNS server repeats the client query for each forwarder server or root hint server that is configured. After the recursion timeout expires, the Windows 2000 DNS server returns a &quot;Server Failure&quot; response to the client. By default, the recursion timeout expires after15 seconds.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone 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.

Prerequisites
Windows 2000 Server Service Pack 3.

Restart requirement
You must restart the DNS Server service after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

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 tool in Control Panel.   Date         Time   Version            Size    File name 26-Aug-2004 18:18  5.0.2195.6972     327,440  Dns.exe



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information about how to control DNS recursive queries with Windows 2000 Server-based computers, click the following article number to view the article in the Microsoft Knowledge Base:

251384 Delays in name resolution using Microsoft DNS Server Forwarder option

For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

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

Keywords: kbbug kbfix kbwin2000presp5fix kbhotfixserver kbqfe KB873454

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