Windows Shadow Copy-related backup freezes in Windows Server 2008

Symptoms

When you perform a backup that's related to Windows Shadow Copy on a server that's running Windows Server 2008, the backup process may freeze or become unresponsive.

Cause

This problem occurs because the thread pool is exhausted by the Network Location Awareness service (NlaSvc.dll). Therefore, no worker threads can be created.

Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. 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, go to 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.

Prerequisites

To apply this hotfix, you must have Service Pack 2 for Windows Vista or Windows Server 2008 installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

The English (United States) 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 Vista and Windows Server 2008 file information and notesImportant 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. 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.
    23xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.

  • 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 Vista and 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 Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Ncsi.dll

6.0.6002.23457

93,184

07-Aug-2014

00:34

x86

Nlaapi.dll

6.0.6002.23457

48,640

07-Aug-2014

00:34

x86

Nlasvc.dll

6.0.6002.23457

174,592

07-Aug-2014

00:34

x86

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

File name

File version

File size

Date

Time

Platform

Ncsi.dll

6.0.6002.23457

109,056

07-Aug-2014

00:28

x64

Nlaapi.dll

6.0.6002.23457

61,440

07-Aug-2014

00:28

x64

Nlasvc.dll

6.0.6002.23457

206,336

07-Aug-2014

00:28

x64

Ncsi.dll

6.0.6002.23457

93,184

07-Aug-2014

00:34

x86

Nlaapi.dll

6.0.6002.23457

48,640

07-Aug-2014

00:34

x86

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Ncsi.dll

6.0.6002.23457

269,312

07-Aug-2014

00:06

IA-64

Nlaapi.dll

6.0.6002.23457

150,016

07-Aug-2014

00:06

IA-64

Nlasvc.dll

6.0.6002.23457

452,608

07-Aug-2014

00:06

IA-64

Ncsi.dll

6.0.6002.23457

93,184

07-Aug-2014

00:34

x86

Nlaapi.dll

6.0.6002.23457

48,640

07-Aug-2014

00:34

x86

Additional file information for Windows Vista and for Windows Server 2008

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

File name

X86_f686948edb270646dfa0c2f9a05dfe97_31bf3856ad364e35_6.0.6002.23457_none_93ffaab607b2b2e9.manifest

File version

Not Applicable

File size

694

Date (UTC)

08-Aug-2014

Time (UTC)

19:38

Platform

Not Applicable

File name

X86_microsoft-windows-nlasvc_31bf3856ad364e35_6.0.6002.23457_none_69c6eb8021507ff4.manifest

File version

Not Applicable

File size

21,939

Date (UTC)

07-Aug-2014

Time (UTC)

00:49

Platform

Not Applicable

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

File name

Amd64_8391585019194f8c2e56c00e08e7e6b9_31bf3856ad364e35_6.0.6002.23457_none_7d27c70ab43c49bc.manifest

File version

Not Applicable

File size

1,038

Date (UTC)

08-Aug-2014

Time (UTC)

19:38

Platform

Not Applicable

File name

Amd64_a16f91e2613ef1031629f31bfc433c1c_31bf3856ad364e35_6.0.6002.23457_none_feb647c4eaf3119e.manifest

File version

Not Applicable

File size

698

Date (UTC)

08-Aug-2014

Time (UTC)

19:38

Platform

Not Applicable

File name

Amd64_microsoft-windows-nlasvc_31bf3856ad364e35_6.0.6002.23457_none_c5e58703d9adf12a.manifest

File version

Not Applicable

File size

21,981

Date (UTC)

07-Aug-2014

Time (UTC)

00:44

Platform

Not Applicable

File name

Wow64_microsoft-windows-nlasvc_31bf3856ad364e35_6.0.6002.23457_none_d03a31560e0eb325.manifest

File version

Not Applicable

File size

16,066

Date (UTC)

07-Aug-2014

Time (UTC)

00:45

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008

File name

Ia64_767e000dbb3f633e4c491f50ca5318af_31bf3856ad364e35_6.0.6002.23457_none_6d4fa8b0ca389dd5.manifest

File version

Not Applicable

File size

696

Date (UTC)

08-Aug-2014

Time (UTC)

19:38

Platform

Not Applicable

File name

Ia64_998587193e8329822af936b1a5febdc5_31bf3856ad364e35_6.0.6002.23457_none_47baa3192e4605e5.manifest

File version

Not Applicable

File size

1,036

Date (UTC)

08-Aug-2014

Time (UTC)

19:38

Platform

Not Applicable

File name

Ia64_microsoft-windows-nlasvc_31bf3856ad364e35_6.0.6002.23457_none_69c88f76214e88f0.manifest

File version

Not Applicable

File size

21,960

Date (UTC)

07-Aug-2014

Time (UTC)

01:23

Platform

Not Applicable

File name

Wow64_microsoft-windows-nlasvc_31bf3856ad364e35_6.0.6002.23457_none_d03a31560e0eb325.manifest

File version

Not Applicable

File size

16,066

Date (UTC)

07-Aug-2014

Time (UTC)

00:45

Platform

Not Applicable


Status

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

References

Learn about the terminology that Microsoft uses to describe software updates.

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