Summary

On a computer that is running Windows 7, Windows Server 2008 R2, Windows 8 or Windows Server 2012, there is a limit of 1,000 rules in the Name Resolution Policy Table (NRPT) that the DNS Client service can use. However, this limit is not enforced when you add a rule. Instead, no rules are loaded into memory when this limit is exceeded.

More Information

This fix that is described in this section removes the 1,000-rule limit for the NRPT. Additionally, this fix minimizes the effect on performance of adding rules.

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, 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 the release version of Windows 7, Windows Server 2008 R2, Windows 8 or Windows Server 2012 installed.

Restart requirement

You must 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 7 and Windows Server 2008 R2 file information and notesImportant 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, 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

    6.1.760
    1.
    22xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    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.

  • 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 7 and 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 x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Dnsapi.dll

6.1.7601.22443

269,824

06-Sep-2013

02:04

x86

Dnscacheugc.exe

6.1.7601.22443

28,672

06-Sep-2013

01:13

x86

Dnsrslvr.dll

6.1.7601.22443

131,584

06-Sep-2013

02:04

x86

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

File name

File version

File size

Date

Time

Platform

Dnsapi.dll

6.1.7601.22443

357,376

06-Sep-2013

02:25

x64

Dnscacheugc.exe

6.1.7601.22443

30,208

06-Sep-2013

01:28

x64

Dnsrslvr.dll

6.1.7601.22443

182,272

06-Sep-2013

02:25

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Dnsapi.dll

6.1.7601.22443

684,544

06-Sep-2013

01:33

IA-64

Dnscacheugc.exe

6.1.7601.22443

62,464

06-Sep-2013

00:58

IA-64

Dnsrslvr.dll

6.1.7601.22443

353,792

06-Sep-2013

01:33

IA-64

Windows 8 and Windows Server 2012 file information and notesImportant Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" 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 8" 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

    6.2.920 0.20 xxx

    Windows 8 and Windows Server 2012

    RTM

    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 8 and Windows Server 2012" 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 x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Dnsapi.dll

6.2.9200.20815

461,824

05-Sep-2013

04:22

x86

Dnsrslvr.dll

6.2.9200.20521

160,768

20-Sep-2012

05:54

x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Dnsapi.dll

6.2.9200.20815

605,184

05-Sep-2013

05:45

x64

Dnsrslvr.dll

6.2.9200.20521

210,432

20-Sep-2012

06:30

x64


Status

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

References

See the terminology Microsoft uses to describe software updates.

Additional file information for Windows 7 and Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File property

Value

File name

X86_d2df93aff00e7f27ddd596966652bfc1_31bf3856ad364e35_6.1.7601.22443_none_102cee04fd5c2799.manifest

File version

Not applicable

File size

698

Date (UTC)

06-Sep-2013

Time (UTC)

17:40

File name

X86_microsoft-windows-dns-client_31bf3856ad364e35_6.1.7601.22443_none_e451f8f1f9d2760f.manifest

File version

Not applicable

File size

55,896

Date (UTC)

06-Sep-2013

Time (UTC)

02:35

Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File property

Value

File name

Amd64_20a501a2b80615b7ca4022e06330d3dc_31bf3856ad364e35_6.1.7601.22443_none_e1f32644d3546b97.manifest

File version

Not applicable

File size

702

Date (UTC)

06-Sep-2013

Time (UTC)

17:40

File name

Amd64_8ff35f96460185a743b275b0e26ebf43_31bf3856ad364e35_6.1.7601.22443_none_3716d4b9dfba9d64.manifest

File version

Not applicable

File size

1,046

Date (UTC)

06-Sep-2013

Time (UTC)

17:40

File name

Amd64_microsoft-windows-dns-client_31bf3856ad364e35_6.1.7601.22443_none_40709475b22fe745.manifest

File version

Not applicable

File size

55,902

Date (UTC)

06-Sep-2013

Time (UTC)

02:55

File name

Wow64_microsoft-windows-dns-client_31bf3856ad364e35_6.1.7601.22443_none_4ac53ec7e690a940.manifest

File version

Not applicable

File size

51,900

Date (UTC)

06-Sep-2013

Time (UTC)

02:20

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File property

Value

File name

Ia64_8cfb5644cad08df820ee00b36bfd80c2_31bf3856ad364e35_6.1.7601.22443_none_9ba030bedaea4f99.manifest

File version

Not applicable

File size

1,044

Date (UTC)

06-Sep-2013

Time (UTC)

17:40

File name

Ia64_microsoft-windows-dns-client_31bf3856ad364e35_6.1.7601.22443_none_e4539ce7f9d07f0b.manifest

File version

Not applicable

File size

55,899

Date (UTC)

06-Sep-2013

Time (UTC)

02:18

File name

Wow64_microsoft-windows-dns-client_31bf3856ad364e35_6.1.7601.22443_none_4ac53ec7e690a940.manifest

File version

Not applicable

File size

51,900

Date (UTC)

06-Sep-2013

Time (UTC)

02:20

Additional file information for Windows 8 and for Windows Server 2012

Additional files for all supported x86-based versions of Windows 8

File property

Value

File name

X86_ffbee6c4c815541f676387269012dcca_31bf3856ad364e35_6.2.9200.20815_none_5160ebdf1124e50e.manifest

File version

Not applicable

File size

705

Date (UTC)

05-Sep-2013

Time (UTC)

16:39

File name

X86_microsoft-windows-dns-client-minwin_31bf3856ad364e35_6.2.9200.20815_none_930d13c20d7048cd.manifest

File version

Not applicable

File size

22,281

Date (UTC)

05-Sep-2013

Time (UTC)

16:39

Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012

File property

Value

File name

Amd64_2da22b52245a86a4487e8592f5109356_31bf3856ad364e35_6.2.9200.20815_none_be3b0cff3d1889de.manifest

File version

Not applicable

File size

709

Date (UTC)

05-Sep-2013

Time (UTC)

16:40

File name

Amd64_b763b331f59d4bfe516d960df37f8f53_31bf3856ad364e35_6.2.9200.20815_none_56cb015c97922d7f.manifest

File version

Not applicable

File size

709

Date (UTC)

05-Sep-2013

Time (UTC)

16:40

File name

Amd64_microsoft-windows-dns-client-minwin_31bf3856ad364e35_6.2.9200.20815_none_ef2baf45c5cdba03.manifest

File version

Not applicable

File size

22,289

Date (UTC)

05-Sep-2013

Time (UTC)

16:40

File name

Wow64_microsoft-windows-dns-client-minwin_31bf3856ad364e35_6.2.9200.20815_none_f9805997fa2e7bfe.manifest

File version

Not applicable

File size

18,396

Date (UTC)

05-Sep-2013

Time (UTC)

05:06


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