Microsoft KB Archive/939882

= The DNS client in Windows Vista incorrectly creates a negative DNS cache entry for the NetBIOS name of a remote host =

Article ID: 939882

Article Last Modified on 11/2/2007

-

APPLIES TO


 * Windows Vista Ultimate
 * Windows Vista Business
 * Windows Vista Enterprise
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Business 64-bit Edition
 * Windows Vista Enterprise 64-bit Edition

-



SYMPTOMS
On a Windows Vista-based computer, the DNS client incorrectly creates a negative DNS cache entry for the NetBIOS name of a remote host. This problem occurs when the client computer is configured to use multiple DNS suffixes. When this problem occurs, you may experience the following symptoms:
 * The Windows Vista-based computer cannot access the remote host by using the NetBIOS name.
 * The NetBIOS name of the remote host cannot be resolved as expected. However, the fully qualified domain name (FQDN) of the remote host can be resolved correctly.
 * If you run the ipconfig /displaydns command to display the content of the DNS resolver cache, the command output indicates that a negative DNS cache entry was created for the NetBIOS name of the remote host.
 * This problem disappears after you run the ipconfig /flushdns command on the computer. However, the next time that the remote host name is resolved, the incorrect negative DNS cache entry appears again.

A typical scenario of this problem occurs when you enable automatic enrollment for certificates in an Active Directory domain environment. This problem causes automatic enrollment to occasionally fail on the Windows Vista-based client computer. Additionally, the following event is logged in the Application log on the client computer: Event Type: Error

Event Source: AutoEnrollment

Event Category: None

Event ID: 13

Date:

Time:

User: N/A

Computer:

Description:

Automatic certificate enrollment for Local system failed to enroll the  certificate from   (The RPC server is unavailable. 0x800706ba (WIN32: 1722)).



CAUSE
This problem occurs because an error occurs in the DNS client if the DNS suffix of the client computer differs from the DNS suffix of the remote host.



Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

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 Vista, 64-bit versions


WORKAROUND
To work around this problem, add an entry for the remote host to the Hosts file on the client computer. The Hosts file is located in the following folder:

%windir%\System32\Drivers\Etc

For more information about the Hosts file, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/library/bb727005.aspx

For more information about how to modify the Hosts file in Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base:

923947 You cannot modify the Hosts file or the Lmhosts file in Windows Vista



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
The following details refer to the issue with certificate enrollment.

Windows Vista uses Task Scheduler (Taskeng.exe) to obtain the new certificate from the CA server by using a remote procedure call (RPC) connection. To create the RPC connection, the system must resolve the CA server name to an IP address. If the DNS suffix of the client computer differs from the DNS suffix of the CA server, the system may create a negative cache entry for the NetBIOS name of the CA server. In this situation, the client computer cannot contact the CA server because the system cannot resolve the CA server name.

To enable automatic certificate enrollment, follow these steps:
 * 1) Create a computer certificate template.
 * 2) Configure the Autoenrollment Settings Group Policy setting to Enroll certificates automatically.

For more information about automatic enrollment in Microsoft Windows Server 2003, visit the following Microsoft Web site:

http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/autoenro.mspx

For more information about how to configure the client computer to use multiple suffixes, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/library/bb727009.aspx

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB939882

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.