Applies ToWindows Server 2008 Standard Windows Server 2008 Enterprise Windows Server 2008 Datacenter Windows Server 2008 Standard without Hyper-V Windows Server 2008 Enterprise without Hyper-V Windows Server 2008 Datacenter without Hyper-V

Symptoms

Consider the following scenario:

  1. A non-Windows Lightweight Directory Access Protocol (LDAP) client tries to bind a Windows Server 2008-based domain controller.

  2. This client uses the Simple Authentication and Security Layer (SASL) protocol for user authentication.

  3. This client makes a Secure Sockets Layer (SSL)/ Transport Layer Security (TLS) connection with the Windows Server 2008-based domain controller.

In this scenario, the Windows Server 2008 domain controller cannot negotiate Quality of Protection (QoP) for TLS connections from this non-Windows LDAP client and the binding process fails.After this problem occurs, the following event is added into the Directory Service log:

Cause

This problem occurs because Windows Server 2008-based domain controllers incorrectly deny the communication from non-Windows LDAP clients. You expereince this issue if you use Simple Authentication and Security Layer (SASL) authentication and SSL/TLS connections.

Resolution

To resolve this problem, install the following hotfix on the affected Windows Server 2008 domain controllers.

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.Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix on Windows Server 2008-based domain controllers, you must have Active Directory installed.

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 2008 file information notes

The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes 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

Ntdsa.mof

Not Applicable

227,725

18-Dec-2007

21:02

Not Applicable

Ntdsai.dll

6.0.6001.22248

1,951,232

21-Aug-2008

03:32

x86

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Ntdsa.mof

Not Applicable

227,725

18-Dec-2007

21:03

Not Applicable

Ntdsai.dll

6.0.6001.22248

2,635,264

21-Aug-2008

04:38

x64

Status

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

Additional file information for Windows Server 2008

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

File name

File version

File size

Date

Time

Platform

Package_for_kb957072_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,647

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,422

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,637

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,430

21-Aug-2008

16:15

Not Applicable

X86_microsoft-windows-d..toryservices-ntdsai_31bf3856ad364e35_6.0.6001.22248_none_f12ca33dd2599c0c.manifest

Not Applicable

12,574

21-Aug-2008

04:19

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Amd64_microsoft-windows-d..toryservices-ntdsai_31bf3856ad364e35_6.0.6001.22248_none_4d4b3ec18ab70d42.manifest

Not Applicable

12,632

21-Aug-2008

05:13

Not Applicable

Package_for_kb957072_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,657

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,430

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,647

21-Aug-2008

16:15

Not Applicable

Package_for_kb957072_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,438

21-Aug-2008

16:15

Not Applicable

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