Symptoms

You notice that Lightweight Directory Access Protocol (LDAP) or Kerberos responses from the domain controller are delayed by 2 to 5 seconds. When the issue occurs, the Lsass.exe process CPU usage is low (even lower than usual).

Around the same time (but up to a 4-hour offset), you may receive Netlogon warning event 5807. This event indicates that many client IP addresses couldn’t be mapped to configured subnet definitions in Active Directory:As noted in the event, you may also receive many entries that have NO_CLIENT_SITE: in the Netlogon log when it is configured.

Cause

These LDAP ping requests are unexpectedly exhausting all available threads for LDAP requests and Kerberos requests. The delayed response may cause clients to retry the LDAP ping (DC Locator) and Kerberos requests, and this makes the situation worse. For technical details, please visit the "More Information" section.

Resolution

This update adds the "Specify address lookup behavior for DC locator ping" Group Policy setting for Windows 7 and Windows Server 2008 R2. After the update is installed, the policy setting is available in the following location:

Computer Configuration\Administrative Templates\System\Net Logon\DC Locator DNS RecordsThe Group Policy setting added by this update enables administrator to control how domain controllers perform address lookups. The policy setting must be applied to domain controllers. You can set three values for the Group Policy setting:

  • 0 - Domain controllers will never perform address lookups.

  • 1 - This is the default behavior. Domain controllers will perform an exhaustive address lookup to discover additional client IP addresses.

  • 2 - Domain controllers will perform a fast, DNS-only address lookup to discover additional client IP addresses.

Policy Screenshot

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 this specific problem.

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, submit a request to 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 website:

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.

Note This update is also applicable for Windows 7 to enable your to use Remote Server Administration Tools. The update should be installed on all domain controllers in all forests that response time is slow. Generally, they are the domain controllers in the forest root domains. You can also install the update on the computers that you use to manage group policies.

PrerequisitesTo apply this hotfix, you must have Service Pack 1 installed. 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 informationTo use the update in this package, you do not have to make any changes to the registry.

Restart requirementYou may be prompted to restart the computer after you apply this hotfix.

Update replacement informationThis update does not replace a previously released update.

File information

The global version of this update 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 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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
    1.22xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

207,360

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

247,808

27-Jan-2014

02:59

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

02:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

02:09

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

226,816

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

196,608

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:12

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

03:03

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:05

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,120

27-Jan-2014

02:56

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,040

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

216,576

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

125,952

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

120,320

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:05

Not applicable

Netmsg.dll.mui

6.1.7601.22582

193,024

27-Jan-2014

02:57

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

217,088

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:06

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

02:57

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

225,792

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

203,776

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

199,168

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:12

Not applicable

Netmsg.dll.mui

6.1.7601.22582

194,560

27-Jan-2014

03:03

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

86,528

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

89,088

27-Jan-2014

02:59

Not applicable

Ntdsa.dll

6.1.7601.22582

45,568

27-Jan-2014

02:12

x86

Ntdsa.mof

Not applicable

227,765

05-Nov-2010

01:54

Not applicable

Ntdsai.dll

6.1.7601.22582

2,025,472

27-Jan-2014

02:12

x86

Netlogon.adml

Not applicable

63,245

27-Jan-2014

02:56

Not applicable

Netlogon.adml

Not applicable

48,320

27-Jan-2014

02:59

Not applicable

Netlogon.adml

Not applicable

44,781

27-Jan-2014

02:57

Not applicable

Netlogon.adml

Not applicable

49,434

27-Jan-2014

02:56

Not applicable

Netlogon.adml

Not applicable

83,244

27-Jan-2014

02:57

Not applicable

Netlogon.adml

Not applicable

40,173

27-Jan-2014

02:09

Not applicable

Netlogon.adml

Not applicable

47,831

27-Jan-2014

02:59

Not applicable

Netlogon.adml

Not applicable

44,523

27-Jan-2014

02:56

Not applicable

Netlogon.adml

Not applicable

51,799

27-Jan-2014

03:01

Not applicable

Netlogon.adml

Not applicable

53,878

27-Jan-2014

02:55

Not applicable

Netlogon.adml

Not applicable

51,709

27-Jan-2014

03:00

Not applicable

Netlogon.adml

Not applicable

48,668

27-Jan-2014

02:59

Not applicable

Netlogon.adml

Not applicable

50,348

27-Jan-2014

03:00

Not applicable

Netlogon.adml

Not applicable

45,192

27-Jan-2014

02:58

Not applicable

Netlogon.adml

Not applicable

43,853

27-Jan-2014

02:55

Not applicable

Netlogon.adml

Not applicable

45,070

27-Jan-2014

02:59

Not applicable

Netlogon.adml

Not applicable

48,317

27-Jan-2014

02:58

Not applicable

Netlogon.adml

Not applicable

47,859

27-Jan-2014

02:55

Not applicable

Netlogon.adml

Not applicable

45,685

27-Jan-2014

02:58

Not applicable

Netlogon.adml

Not applicable

69,027

27-Jan-2014

02:59

Not applicable

Netlogon.adml

Not applicable

45,983

27-Jan-2014

03:00

Not applicable

Netlogon.adml

Not applicable

43,974

27-Jan-2014

03:01

Not applicable

Netlogon.adml

Not applicable

36,178

27-Jan-2014

02:58

Not applicable

Netlogon.adml

Not applicable

37,216

27-Jan-2014

02:57

Not applicable

Netlogon.admx

Not applicable

18,356

16-Jan-2014

07:43

Not applicable

Netlogon.dll

6.1.7601.22582

572,416

27-Jan-2014

02:12

x86

Nlsvc.mof

Not applicable

2,873

10-Jun-2009

21:29

Not applicable

For all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

207,360

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

247,808

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

02:32

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

02:31

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

226,816

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

196,608

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,120

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,040

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

216,576

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

125,952

27-Jan-2014

05:13

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

120,320

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

193,024

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

217,088

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

225,792

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

203,776

27-Jan-2014

05:13

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

199,168

27-Jan-2014

05:12

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

194,560

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

86,528

27-Jan-2014

05:11

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

05:21

Not applicable

Netmsg.dll.mui

6.1.7601.22582

89,088

27-Jan-2014

05:13

Not applicable

Ntdsa.dll

6.1.7601.22582

68,608

27-Jan-2014

02:37

x64

Ntdsbmsg.dll.mui

6.1.7601.22582

19,968

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

58,486

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

796,672

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

25,550

27-Jan-2014

04:53

Not applicable

Rules.ad.xml

Not applicable

8,368

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

24,064

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

61,684

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

880,640

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

24,069

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

7,695

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

19,968

27-Jan-2014

02:32

Not applicable

Ntdsctrs.ini

Not applicable

54,286

27-Jan-2014

02:32

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

788,992

27-Jan-2014

02:31

Not applicable

Report.ad.xml

Not applicable

22,929

27-Jan-2014

02:32

Not applicable

Rules.ad.xml

Not applicable

7,255

27-Jan-2014

02:31

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

23,552

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

60,800

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

879,616

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

24,503

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

8,031

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

24,064

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

61,502

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

893,952

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

24,821

27-Jan-2014

04:54

Not applicable

Rules.ad.xml

Not applicable

8,168

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

19,456

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

58,156

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

839,680

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

25,482

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

8,284

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

20,992

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

58,590

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

868,352

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

24,090

27-Jan-2014

04:54

Not applicable

Rules.ad.xml

Not applicable

8,177

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

12,800

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

40,580

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

562,176

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

23,027

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

8,891

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

13,312

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

40,034

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

535,040

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

23,790

27-Jan-2014

04:54

Not applicable

Rules.ad.xml

Not applicable

8,293

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

22,528

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

63,530

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

849,408

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

23,900

27-Jan-2014

04:54

Not applicable

Rules.ad.xml

Not applicable

7,839

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

21,504

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

58,990

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

849,920

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

24,779

27-Jan-2014

04:53

Not applicable

Rules.ad.xml

Not applicable

8,332

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

22,016

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

57,834

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

843,264

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

24,297

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

7,821

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

23,552

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

60,310

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

865,792

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

24,922

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

8,115

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

20,992

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

57,258

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

823,296

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

27,906

27-Jan-2014

04:56

Not applicable

Rules.ad.xml

Not applicable

10,526

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

21,504

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

59,230

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

799,232

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

24,062

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

7,623

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

18,944

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

54,780

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

790,528

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

23,889

27-Jan-2014

04:55

Not applicable

Rules.ad.xml

Not applicable

7,635

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

9,728

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

34,782

27-Jan-2014

05:13

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

438,272

27-Jan-2014

05:06

Not applicable

Report.ad.xml

Not applicable

22,757

27-Jan-2014

04:54

Not applicable

Rules.ad.xml

Not applicable

7,024

27-Jan-2014

05:17

Not applicable

Ntdsbmsg.dll.mui

6.1.7601.22582

9,728

27-Jan-2014

05:19

Not applicable

Ntdsctrs.ini

Not applicable

36,464

27-Jan-2014

05:14

Not applicable

Ntdsmsg.dll.mui

6.1.7601.22582

446,464

27-Jan-2014

05:07

Not applicable

Report.ad.xml

Not applicable

22,781

27-Jan-2014

04:56

Not applicable

Rules.ad.xml

Not applicable

7,059

27-Jan-2014

05:17

Not applicable

Ntdsa.mof

Not applicable

227,765

05-Nov-2010

01:54

Not applicable

Ntdsai.dll

6.1.7601.22582

2,753,024

27-Jan-2014

02:37

x64

Netlogon.adml

Not applicable

63,245

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

48,320

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

44,781

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

49,434

27-Jan-2014

05:11

Not applicable

Netlogon.adml

Not applicable

83,244

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

40,173

27-Jan-2014

02:32

Not applicable

Netlogon.adml

Not applicable

47,831

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

44,523

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

51,799

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

53,878

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

51,709

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

48,668

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

50,348

27-Jan-2014

05:11

Not applicable

Netlogon.adml

Not applicable

45,192

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

43,853

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

45,070

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

48,317

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

47,859

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

45,685

27-Jan-2014

05:11

Not applicable

Netlogon.adml

Not applicable

69,027

27-Jan-2014

05:11

Not applicable

Netlogon.adml

Not applicable

45,983

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

43,974

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

36,178

27-Jan-2014

05:10

Not applicable

Netlogon.adml

Not applicable

37,216

27-Jan-2014

05:11

Not applicable

Netlogon.admx

Not applicable

18,356

16-Jan-2014

07:43

Not applicable

Netlogon.dll

6.1.7601.22582

705,536

27-Jan-2014

02:37

x64

Nlsvc.mof

Not applicable

2,873

10-Jun-2009

20:47

Not applicable

Netlogon.dll

6.1.7601.22582

572,416

27-Jan-2014

02:12

x86

Nlsvc.mof

Not applicable

2,873

10-Jun-2009

21:29

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

207,360

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

247,808

27-Jan-2014

02:59

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

02:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,632

27-Jan-2014

02:09

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

226,816

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:07

Not applicable

Netmsg.dll.mui

6.1.7601.22582

196,608

27-Jan-2014

02:58

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:12

Not applicable

Netmsg.dll.mui

6.1.7601.22582

231,936

27-Jan-2014

03:03

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:05

Not applicable

Netmsg.dll.mui

6.1.7601.22582

197,120

27-Jan-2014

02:56

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,040

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

216,576

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

125,952

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

5,120

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

120,320

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,144

27-Jan-2014

03:05

Not applicable

Netmsg.dll.mui

6.1.7601.22582

193,024

27-Jan-2014

02:57

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

217,088

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,168

27-Jan-2014

03:06

Not applicable

Netmsg.dll.mui

6.1.7601.22582

215,552

27-Jan-2014

02:57

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

7,680

27-Jan-2014

03:09

Not applicable

Netmsg.dll.mui

6.1.7601.22582

225,792

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:10

Not applicable

Netmsg.dll.mui

6.1.7601.22582

203,776

27-Jan-2014

03:01

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:11

Not applicable

Netmsg.dll.mui

6.1.7601.22582

199,168

27-Jan-2014

03:02

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

6,656

27-Jan-2014

03:12

Not applicable

Netmsg.dll.mui

6.1.7601.22582

194,560

27-Jan-2014

03:03

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

86,528

27-Jan-2014

03:00

Not applicable

Bootfix.bin

Not applicable

1,024

09-Jul-2013

05:41

Not applicable

Expand.exe.mui

6.1.7601.22582

4,608

27-Jan-2014

03:08

Not applicable

Netmsg.dll.mui

6.1.7601.22582

89,088

27-Jan-2014

02:59

Not applicable


Status

Microsoft has created an updated binary and policy settings to enable administrators to control how NetBT is used to process LDAP pings.

More Information

When a domain controller receives a LDAP User Datagram Protocol (UDP) ping, the domain controller performs a client IP address lookup to find a matching subnet definition in Active Directory in order to provide the client with the corresponding logon site name.

If the domain controller cannot find a matching subnet for the client IP, it performs its own name resolution with the client's NetBIOS name for potentially finding a different IP having a subnet match.

The name resolution is performed in accordance with the domain controller's available resolution mechanism. In addition to DNS, WINS and NetBIOS may also be used, including broadcasts. According to the name resolution response or time-out, the related LDAP ping is locking one of the threads of the limited Active Thread Queue (ATQ) pool. Many of these LDAP pings over a longer time may constantly exhaust the ATQ pool. Because the same pool is required for regular LDAP and Kerberos requests, the domain controller becomes almost unavailable to users.

The domain controllers stop responding to the following workloads when the worker thread pool is exhausted, because they all share the same ATQ worker thread pool:

  • LDAP pings

  • LDAP queries

  • Kerberos

Failing those three core operations would cause many transitive errors on remote clients, applications, and domain controllers.

You may also observe the following symptoms:

  • Because the domain controller cannot perform workloads in this situation, CPU usage is lower than usual. (when Baseline Monitoring for comparison is in place)

  • The NTDS\ATQ Threads LDAP counter in Perfmon is equal to NTDS\ATQ Threads Total.

  • Domain controllers take about 2 seconds to service LDAP pings, as illustrated in the NETLOGON.LOG when debug logging is enabled by using "nltest /dbflag:0x2080FFFF." The log also contains frequent entries that contain "NO_CLIENT_SITE."


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

Workaround

Before this update is installed, the following workarounds were identified as avoiding the problem:

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