Microsoft KB Archive/929768

= Some applications do not work correctly when you use a DNS server that is running Windows Server 2003 and that supports dynamic updates =

Article ID: 929768

Article Last Modified on 10/11/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Enterprise Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Standard x64 Edition
 * Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems

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SYMPTOMS
You have a Domain Name System (DNS) server that is running Microsoft Windows Server 2003 and that supports dynamic updates. This DNS server also lets multiple pointer (PTR) resource records be added into reverse DNS zones for the same IP address. However, some applications require that each IP address have a unique pointer (PTR) resource record. Therefore, this behavior prevents some applications from working correctly.



CAUSE
The DNS server does not replace the previous pointer (PTR) resource record when a client or a Dynamic Host Configuration Protocol (DHCP) server adds a new pointer (PTR) resource record for the same IP address.



Hotfix information
After you install this hotfix, the registration process for the pointer (PTR) resource records changes. A new PTR resource record will replace previous pointer (PTR) resource records for the same IP address.

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer 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 Server 2003 Server Pack 1 (SP1) or Windows Server 2003 Service Pack 2 (SP2) must be installed on the computer.

889100 How to obtain the latest service pack for Windows Server 2003

Restart requirement
You must restart the computer 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 item in Control Panel.

Windows Server 2003 with SP2, Itanium-based versions


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
When a network client receives an IP address and related configuration information from a DHCP server, one of the following events occurs:
 * The client registers a host (A) resource record on the DNS server.
 * The client lets the DHCP server register a host (A) resource record, a pointer (PTR) resource record, or both types of resource records in the DNS database. The DHCP server keeps track of the pointer (PTR) resource record for the client.

Additional query words: rtp. a

Keywords: kbqfe kbexpertiseinter kbhotfixserver KB929768

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