Audio output stops intermittently on a computer that is running Windows 7 or Windows Server 2008 R2

Symptoms

Assume that you install an inbox driver for a USB audio device on a computer that is running Windows 7 or Windows Server 2008 R2. When you try to play audio on the USB audio device, audio output stops intermittently.

Cause

This issue occurs because the initialization that is performed for the buffer of the audio data is insufficient for when you try to play audio.

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 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 be running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

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 this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

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 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
    0.16xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.21xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical 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 for Windows Server 2008 R2" section. 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, 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

Audiodg.exe

6.1.7600.16385

100,864

14-Jul-2009

01:14

Audioeng.dll

6.1.7600.17037

374,784

08-Jun-2012

04:39

Audiokse.dll

6.1.7600.17037

442,880

08-Jun-2012

04:43

Audioses.dll

6.1.7600.16385

195,584

14-Jul-2009

01:14

Audiosrv.dll

6.1.7600.16385

473,088

14-Jul-2009

01:14

Encdump.dll

5.0.1.1

274,944

08-Jun-2012

04:40

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

21:00

Audiodg.exe

6.1.7600.21229

100,864

08-Jun-2012

05:49

Audioeng.dll

6.1.7600.21229

374,784

08-Jun-2012

05:50

Audiokse.dll

6.1.7600.21229

442,880

08-Jun-2012

05:54

Audioses.dll

6.1.7600.16385

195,584

14-Jul-2009

01:14

Audiosrv.dll

6.1.7600.21229

473,088

08-Jun-2012

05:50

Encdump.dll

5.0.1.1

274,944

08-Jun-2012

05:51

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

21:00

Audiodg.exe

6.1.7601.17514

100,864

20-Nov-2010

12:16

Audioeng.dll

6.1.7601.17858

374,784

08-Jun-2012

04:40

Audiokse.dll

6.1.7601.17858

442,880

08-Jun-2012

04:43

Audioses.dll

6.1.7601.17858

195,584

08-Jun-2012

04:40

Audiosrv.dll

6.1.7601.17514

473,600

20-Nov-2010

12:18

Encdump.dll

5.0.1.1

274,944

08-Jun-2012

04:41

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:26

Audiodg.exe

6.1.7601.17514

100,864

20-Nov-2010

12:16

Audioeng.dll

6.1.7601.22014

374,784

08-Jun-2012

04:19

Audiokse.dll

6.1.7601.22014

442,880

08-Jun-2012

04:22

Audioses.dll

6.1.7601.22014

195,584

08-Jun-2012

04:19

Audiosrv.dll

6.1.7601.17514

473,600

20-Nov-2010

12:18

Encdump.dll

5.0.1.1

274,944

08-Jun-2012

04:20

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:26

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

File name

File version

File size

Date

Time

Platform

Audiodg.exe

6.1.7600.16385

126,464

14-Jul-2009

01:38

x64

Audioeng.dll

6.1.7600.16385

440,832

14-Jul-2009

01:40

x64

Audiokse.dll

6.1.7600.17037

499,712

08-Jun-2012

05:23

x64

Audioses.dll

6.1.7600.17037

296,448

08-Jun-2012

05:19

x64

Audiosrv.dll

6.1.7600.17037

676,864

08-Jun-2012

05:19

x64

Encdump.dll

5.0.1.1

283,648

08-Jun-2012

05:20

x64

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

20:47

Not applicable

Audiodg.exe

6.1.7600.21229

126,464

08-Jun-2012

05:26

x64

Audioeng.dll

6.1.7600.16385

440,832

14-Jul-2009

01:40

x64

Audiokse.dll

6.1.7600.21229

499,712

08-Jun-2012

05:33

x64

Audioses.dll

6.1.7600.21229

296,448

08-Jun-2012

05:27

x64

Audiosrv.dll

6.1.7600.21229

677,376

08-Jun-2012

05:27

x64

Encdump.dll

5.0.1.1

283,648

08-Jun-2012

05:29

x64

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

20:47

Not applicable

Audiodg.exe

6.1.7601.17514

126,464

20-Nov-2010

13:24

x64

Audioeng.dll

6.1.7601.17858

440,832

08-Jun-2012

05:30

x64

Audiokse.dll

6.1.7601.17858

499,712

08-Jun-2012

05:35

x64

Audioses.dll

6.1.7601.17858

296,448

08-Jun-2012

05:30

x64

Audiosrv.dll

6.1.7601.17858

679,424

08-Jun-2012

05:30

x64

Encdump.dll

5.0.1.1

283,648

08-Jun-2012

05:31

x64

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:25

Not applicable

Audiodg.exe

6.1.7601.17514

126,464

20-Nov-2010

13:24

x64

Audioeng.dll

6.1.7601.22014

440,832

08-Jun-2012

05:22

x64

Audiokse.dll

6.1.7601.22014

499,712

08-Jun-2012

05:27

x64

Audioses.dll

6.1.7601.22014

296,448

08-Jun-2012

05:22

x64

Audiosrv.dll

6.1.7601.22014

679,424

08-Jun-2012

05:22

x64

Encdump.dll

5.0.1.1

283,648

08-Jun-2012

05:23

x64

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:25

Not applicable

Audioeng.dll

6.1.7600.17037

374,784

08-Jun-2012

04:39

x86

Audiokse.dll

6.1.7600.17037

442,880

08-Jun-2012

04:43

x86

Audioses.dll

6.1.7600.16385

195,584

14-Jul-2009

01:14

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

21:00

Not applicable

Audioeng.dll

6.1.7600.21229

374,784

08-Jun-2012

05:50

x86

Audiokse.dll

6.1.7600.21229

442,880

08-Jun-2012

05:54

x86

Audioses.dll

6.1.7600.16385

195,584

14-Jul-2009

01:14

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

21:00

Not applicable

Audioeng.dll

6.1.7601.17858

374,784

08-Jun-2012

04:40

x86

Audiokse.dll

6.1.7601.17858

442,880

08-Jun-2012

04:43

x86

Audioses.dll

6.1.7601.17858

195,584

08-Jun-2012

04:40

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:26

Not applicable

Audioeng.dll

6.1.7601.22014

374,784

08-Jun-2012

04:19

x86

Audiokse.dll

6.1.7601.22014

442,880

08-Jun-2012

04:22

x86

Audioses.dll

6.1.7601.22014

195,584

08-Jun-2012

04:19

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:26

Not applicable

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

File name

File version

File size

Date

Time

Platform

Audiodg.exe

6.1.7600.17037

323,072

08-Jun-2012

04:06

IA-64

Audioeng.dll

6.1.7600.16385

518,656

14-Jul-2009

01:45

IA-64

Audiokse.dll

6.1.7600.17037

339,968

08-Jun-2012

04:08

IA-64

Audioses.dll

6.1.7600.16385

608,256

14-Jul-2009

01:45

IA-64

Audiosrv.dll

6.1.7600.17037

1,381,888

08-Jun-2012

04:08

IA-64

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

20:47

Not applicable

Audiodg.exe

6.1.7600.21229

323,072

08-Jun-2012

04:07

IA-64

Audioeng.dll

6.1.7600.16385

518,656

14-Jul-2009

01:45

IA-64

Audiokse.dll

6.1.7600.21229

339,968

08-Jun-2012

04:08

IA-64

Audioses.dll

6.1.7600.16385

608,256

14-Jul-2009

01:45

IA-64

Audiosrv.dll

6.1.7600.21229

1,382,912

08-Jun-2012

04:08

IA-64

Prod_audio-audiocore.ptxml

Not applicable

1,442

13-Jul-2009

20:47

Not applicable

Audiodg.exe

6.1.7601.17858

323,072

08-Jun-2012

04:03

IA-64

Audioeng.dll

6.1.7600.16385

518,656

14-Jul-2009

01:45

IA-64

Audiokse.dll

6.1.7601.17858

339,968

08-Jun-2012

04:05

IA-64

Audioses.dll

6.1.7601.17858

607,744

08-Jun-2012

04:05

IA-64

Audiosrv.dll

6.1.7601.17858

1,382,912

08-Jun-2012

04:05

IA-64

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:06

Not applicable

Audiodg.exe

6.1.7601.22014

323,072

08-Jun-2012

04:09

IA-64

Audioeng.dll

6.1.7600.16385

518,656

14-Jul-2009

01:45

IA-64

Audiokse.dll

6.1.7601.22014

339,968

08-Jun-2012

04:11

IA-64

Audioses.dll

6.1.7601.22014

607,744

08-Jun-2012

04:11

IA-64

Audiosrv.dll

6.1.7601.22014

1,382,912

08-Jun-2012

04:11

IA-64

Prod_audio-audiocore.ptxml

Not applicable

667

20-Nov-2010

04:06

Not applicable

Audioeng.dll

6.1.7600.17037

374,784

08-Jun-2012

04:39

x86

Audiokse.dll

6.1.7600.17037

442,880

08-Jun-2012

04:43

x86

Audioses.dll

6.1.7600.17037

195,584

08-Jun-2012

04:39

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

1,442

07-Jun-2012

23:37

Not applicable

Audioeng.dll

6.1.7600.21229

374,784

08-Jun-2012

05:50

x86

Audiokse.dll

6.1.7600.21229

442,880

08-Jun-2012

05:54

x86

Audioses.dll

6.1.7600.21229

195,584

08-Jun-2012

05:50

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

1,442

07-Jun-2012

23:36

Not applicable

Audioeng.dll

6.1.7601.17858

374,784

08-Jun-2012

04:40

x86

Audiokse.dll

6.1.7601.17858

442,880

08-Jun-2012

04:43

x86

Audioses.dll

6.1.7601.17858

195,584

08-Jun-2012

04:40

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

667

07-Jun-2012

23:34

Not applicable

Audioeng.dll

6.1.7601.22014

374,784

08-Jun-2012

04:19

x86

Audiokse.dll

6.1.7601.22014

442,880

08-Jun-2012

04:22

x86

Audioses.dll

6.1.7601.22014

195,584

08-Jun-2012

04:19

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

667

07-Jun-2012

23:34

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 7 and for Windows Server 2008 R2

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

File name

X86_29e6bcb32a3cfd882a1f2e6fc87b617d_31bf3856ad364e35_6.1.7600.17037_none_c1c6ad276be4e851.manifest

File version

Not applicable

File size

703

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

X86_951a162f61ae63f9a8e8b396b85eb88b_31bf3856ad364e35_6.1.7601.17858_none_daae5fca5d1c75f7.manifest

File version

Not applicable

File size

703

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

X86_a9adb2f2c804e16a3e69b9eeef94f66b_31bf3856ad364e35_6.1.7601.22014_none_8c4eecf5fa88e7c8.manifest

File version

Not applicable

File size

703

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

X86_f66076b962568ca196937a4e40b80d29_31bf3856ad364e35_6.1.7600.21229_none_f0a48852d13ceda6.manifest

File version

Not applicable

File size

703

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_76ae0e0045c91e70.manifest

File version

Not applicable

File size

88,774

Date (UTC)

08-Jun-2012

Time (UTC)

23:44

File name

X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_77447d315edcd21e.manifest

File version

Not applicable

File size

88,774

Date (UTC)

08-Jun-2012

Time (UTC)

23:44

File name

X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_787ff53c42fea57a.manifest

File version

Not applicable

File size

88,662

Date (UTC)

08-Jun-2012

Time (UTC)

23:44

File name

X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_7930a8b15bffa366.manifest

File version

Not applicable

File size

88,662

Date (UTC)

08-Jun-2012

Time (UTC)

23:44

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

File name

Amd64_3a97ed1ae5481b510f054d53f3803d61_31bf3856ad364e35_6.1.7601.22014_none_d66cecb26f3a949b.manifest

File version

Not applicable

File size

1,056

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Amd64_7194b7bfccda9541f3c2f002d09f66a9_31bf3856ad364e35_6.1.7601.17858_none_6cb2c1ba45c97b18.manifest

File version

Not applicable

File size

1,056

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Amd64_e12f9bc1029d8cb7127f2427c3d3c8d3_31bf3856ad364e35_6.1.7600.17037_none_8f83af05282c471d.manifest

File version

Not applicable

File size

1,056

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Amd64_e2d1a3a92761e94a4a700d6f9574bb48_31bf3856ad364e35_6.1.7600.21229_none_ba8179be9b89f2e7.manifest

File version

Not applicable

File size

1,056

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_d2cca983fe268fa6.manifest

File version

Not applicable

File size

88,778

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_d36318b5173a4354.manifest

File version

Not applicable

File size

88,778

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_d49e90bffb5c16b0.manifest

File version

Not applicable

File size

88,666

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_d54f4435145d149c.manifest

File version

Not applicable

File size

88,666

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_dd2153d6328751a1.manifest

File version

Not applicable

File size

80,748

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_ddb7c3074b9b054f.manifest

File version

Not applicable

File size

80,748

Date (UTC)

08-Jun-2012

Time (UTC)

23:52

File name

Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_def33b122fbcd8ab.manifest

File version

Not applicable

File size

75,265

Date (UTC)

08-Jun-2012

Time (UTC)

05:03

File name

Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_dfa3ee8748bdd697.manifest

File version

Not applicable

File size

75,265

Date (UTC)

08-Jun-2012

Time (UTC)

04:40

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

File name

Ia64_274059f3aa0f4c9a3e4c2c4b940c5979_31bf3856ad364e35_6.1.7601.22014_none_e7391d6f8b942832.manifest

File version

Not applicable

File size

1,054

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Ia64_36ced18b06dcc9bae898fe7b7d4de093_31bf3856ad364e35_6.1.7600.21229_none_8397b08b24e0f0f5.manifest

File version

Not applicable

File size

1,054

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Ia64_92298fda939403caad98d2cbc5dc4fff_31bf3856ad364e35_6.1.7601.17858_none_68f52d9881d20b5a.manifest

File version

Not applicable

File size

1,054

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Ia64_d2785a949ed79b3715ad761dca54d49d_31bf3856ad364e35_6.1.7600.17037_none_e303839928da3774.manifest

File version

Not applicable

File size

1,054

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

Ia64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_76afb1f645c7276c.manifest

File version

Not applicable

File size

87,952

Date (UTC)

08-Jun-2012

Time (UTC)

23:37

File name

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08-Jun-2012

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08-Jun-2012

Time (UTC)

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08-Jun-2012

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08-Jun-2012

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08-Jun-2012

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Date (UTC)

08-Jun-2012

Time (UTC)

04:40

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