DNS server stops responding to DNS queries from client computers in in Windows Server 2003, in Windows Server 2008 or in Windows Server 2008 R2

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Symptoms

The DNS Server service on a DNS server that is running Windows Server 2003, Windows Server 2008 or Windows Server 2008 R2 intermittently does not respond to DNS queries from client computers. When this issue occurs, the DNS server stops responding.

Cause

This issue occurs because the DNS Server service enters an infinite loop when the DNS Server service generates a DNS response. The infinite loop occurs if the DNS Server service encounters an offset that points to the previous location that the DNS Server service was checking.

Resolution

Hotfix information

A 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 the problem described in this article. 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.

Mainstream support for Windows Server 2003 ended on July 13, 2010. A hotfix for this issue exists but is not publicly available. Please review the Microsoft Support Lifecycle policy.

Extended Support

The Extended Support phase follows Mainstream Support for Business and Developer products.
At the supported service pack level, Extended Support includes:

  • Paid support

  • Security update support at no additional cost

  • Non-security related hotfix support requires a separate Extended Hotfix Support Agreement to be purchased (per-fix fees also apply)

Please note:

  • Microsoft will not accept requests for warranty support, design changes, or new features during the Extended Support phase

  • Extended Support is not available for Consumer, Hardware, or Multimedia products

Please contact Microsoft Support for information on how to obtain the hotfix.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows Server 2008 R2 Service Pack 1 (SP1)

Additionally, you must have the DNS Server role installed.

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

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

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You do not have to restart the computer after you apply this hotfix. To avoid restarting, stop the DNS Server service.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    2.
    22xxx

    Windows Server 2008

    SP2

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Cache.dns

Not Applicable

3,179

09-Sep-2011

11:25

Not Applicable

Dns.exe

6.0.6002.22758

510,976

19-Dec-2011

14:05

x86

Dnsserver.events.xml

Not Applicable

609

09-Sep-2011

11:25

Not Applicable

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Cache.dns

Not Applicable

3,179

15-Nov-2011

15:04

Not Applicable

Dns.exe

6.0.6002.22758

638,976

19-Dec-2011

14:25

x64

Dnsserver.events.xml

Not Applicable

609

15-Nov-2011

15:04

Not Applicable

Windows Server 2008 R2 file information notes


Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, only "Windows 7" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    1.21xxx

    Windows Server 2008 R2

    SP1

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Cache.dns

Not Applicable

3,198

05-Nov-2010

01:52

Not Applicable

Dns.exe

6.1.7601.21879

698,368

17-Dec-2011

06:20

x64

Dnsserver.events.xml

Not Applicable

609

05-Nov-2010

01:52

Not Applicable

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, 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

Additional file information

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

File name

X86_130a386c3e77ee0be889d2ec60cc1851_31bf3856ad364e35_6.0.6002.22758_none_1c49122c4d0b45a5.manifest

File version

Not Applicable

File size

706

Date (UTC)

20-Dec-2011

Time (UTC)

05:48

File name

X86_microsoft-windows-dns-server-service_31bf3856ad364e35_6.0.6002.22758_none_5047f7f2ecf9cac5.manifest

File version

Not Applicable

File size

163,376

Date (UTC)

19-Dec-2011

Time (UTC)

16:25

Additional files for all supported x64-based versions of Windows Server 2008

File name

Amd64_0b0f25f6b8df1108392f63689a016ff6_31bf3856ad364e35_6.0.6002.22758_none_a16c3bb6f2918dba.manifest

File version

Not Applicable

File size

710

Date (UTC)

20-Dec-2011

Time (UTC)

05:48

File name

Amd64_microsoft-windows-dns-server-service_31bf3856ad364e35_6.0.6002.22758_none_ac669376a5573bfb.manifest

File version

Not Applicable

File size

163,418

Date (UTC)

19-Dec-2011

Time (UTC)

16:39

Additional file information for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2

File name

Amd64_8233f1f83901b9d9b648f65d02f5bd23_31bf3856ad364e35_6.1.7601.21879_none_d26f396b4087a056.manifest

File version

Not Applicable

File size

710

Date (UTC)

18-Dec-2011

Time (UTC)

00:45

File name

Amd64_microsoft-windows-dns-server-service_31bf3856ad364e35_6.1.7601.21879_none_ac79ad66067de3bd.manifest

File version

Not Applicable

File size

158,131

Date (UTC)

17-Dec-2011

Time (UTC)

07:59

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