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

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Article ID: 2721341 - View products that this article applies to.
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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=support
Note 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:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 0.16xxxWindows 7 and Windows Server 2008 R2RTMGDR
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.17xxxWindows 7 and Windows Server 2008 R2SP1GDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • 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
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Audiodg.exe6.1.7600.16385100,86414-Jul-200901:14
Audioeng.dll6.1.7600.17037374,78408-Jun-201204:39
Audiokse.dll6.1.7600.17037442,88008-Jun-201204:43
Audioses.dll6.1.7600.16385195,58414-Jul-200901:14
Audiosrv.dll6.1.7600.16385473,08814-Jul-200901:14
Encdump.dll5.0.1.1274,94408-Jun-201204:40
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200921:00
Audiodg.exe6.1.7600.21229100,86408-Jun-201205:49
Audioeng.dll6.1.7600.21229374,78408-Jun-201205:50
Audiokse.dll6.1.7600.21229442,88008-Jun-201205:54
Audioses.dll6.1.7600.16385195,58414-Jul-200901:14
Audiosrv.dll6.1.7600.21229473,08808-Jun-201205:50
Encdump.dll5.0.1.1274,94408-Jun-201205:51
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200921:00
Audiodg.exe6.1.7601.17514100,86420-Nov-201012:16
Audioeng.dll6.1.7601.17858374,78408-Jun-201204:40
Audiokse.dll6.1.7601.17858442,88008-Jun-201204:43
Audioses.dll6.1.7601.17858195,58408-Jun-201204:40
Audiosrv.dll6.1.7601.17514473,60020-Nov-201012:18
Encdump.dll5.0.1.1274,94408-Jun-201204:41
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:26
Audiodg.exe6.1.7601.17514100,86420-Nov-201012:16
Audioeng.dll6.1.7601.22014374,78408-Jun-201204:19
Audiokse.dll6.1.7601.22014442,88008-Jun-201204:22
Audioses.dll6.1.7601.22014195,58408-Jun-201204:19
Audiosrv.dll6.1.7601.17514473,60020-Nov-201012:18
Encdump.dll5.0.1.1274,94408-Jun-201204:20
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:26
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Audiodg.exe6.1.7600.16385126,46414-Jul-200901:38x64
Audioeng.dll6.1.7600.16385440,83214-Jul-200901:40x64
Audiokse.dll6.1.7600.17037499,71208-Jun-201205:23x64
Audioses.dll6.1.7600.17037296,44808-Jun-201205:19x64
Audiosrv.dll6.1.7600.17037676,86408-Jun-201205:19x64
Encdump.dll5.0.1.1283,64808-Jun-201205:20x64
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200920:47Not applicable
Audiodg.exe6.1.7600.21229126,46408-Jun-201205:26x64
Audioeng.dll6.1.7600.16385440,83214-Jul-200901:40x64
Audiokse.dll6.1.7600.21229499,71208-Jun-201205:33x64
Audioses.dll6.1.7600.21229296,44808-Jun-201205:27x64
Audiosrv.dll6.1.7600.21229677,37608-Jun-201205:27x64
Encdump.dll5.0.1.1283,64808-Jun-201205:29x64
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200920:47Not applicable
Audiodg.exe6.1.7601.17514126,46420-Nov-201013:24x64
Audioeng.dll6.1.7601.17858440,83208-Jun-201205:30x64
Audiokse.dll6.1.7601.17858499,71208-Jun-201205:35x64
Audioses.dll6.1.7601.17858296,44808-Jun-201205:30x64
Audiosrv.dll6.1.7601.17858679,42408-Jun-201205:30x64
Encdump.dll5.0.1.1283,64808-Jun-201205:31x64
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:25Not applicable
Audiodg.exe6.1.7601.17514126,46420-Nov-201013:24x64
Audioeng.dll6.1.7601.22014440,83208-Jun-201205:22x64
Audiokse.dll6.1.7601.22014499,71208-Jun-201205:27x64
Audioses.dll6.1.7601.22014296,44808-Jun-201205:22x64
Audiosrv.dll6.1.7601.22014679,42408-Jun-201205:22x64
Encdump.dll5.0.1.1283,64808-Jun-201205:23x64
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:25Not applicable
Audioeng.dll6.1.7600.17037374,78408-Jun-201204:39x86
Audiokse.dll6.1.7600.17037442,88008-Jun-201204:43x86
Audioses.dll6.1.7600.16385195,58414-Jul-200901:14x86
Prod_wow64_audio-audiocore.ptxmlNot applicable1,44213-Jul-200921:00Not applicable
Audioeng.dll6.1.7600.21229374,78408-Jun-201205:50x86
Audiokse.dll6.1.7600.21229442,88008-Jun-201205:54x86
Audioses.dll6.1.7600.16385195,58414-Jul-200901:14x86
Prod_wow64_audio-audiocore.ptxmlNot applicable1,44213-Jul-200921:00Not applicable
Audioeng.dll6.1.7601.17858374,78408-Jun-201204:40x86
Audiokse.dll6.1.7601.17858442,88008-Jun-201204:43x86
Audioses.dll6.1.7601.17858195,58408-Jun-201204:40x86
Prod_wow64_audio-audiocore.ptxmlNot applicable66720-Nov-201004:26Not applicable
Audioeng.dll6.1.7601.22014374,78408-Jun-201204:19x86
Audiokse.dll6.1.7601.22014442,88008-Jun-201204:22x86
Audioses.dll6.1.7601.22014195,58408-Jun-201204:19x86
Prod_wow64_audio-audiocore.ptxmlNot applicable66720-Nov-201004:26Not applicable
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Audiodg.exe6.1.7600.17037323,07208-Jun-201204:06IA-64
Audioeng.dll6.1.7600.16385518,65614-Jul-200901:45IA-64
Audiokse.dll6.1.7600.17037339,96808-Jun-201204:08IA-64
Audioses.dll6.1.7600.16385608,25614-Jul-200901:45IA-64
Audiosrv.dll6.1.7600.170371,381,88808-Jun-201204:08IA-64
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200920:47Not applicable
Audiodg.exe6.1.7600.21229323,07208-Jun-201204:07IA-64
Audioeng.dll6.1.7600.16385518,65614-Jul-200901:45IA-64
Audiokse.dll6.1.7600.21229339,96808-Jun-201204:08IA-64
Audioses.dll6.1.7600.16385608,25614-Jul-200901:45IA-64
Audiosrv.dll6.1.7600.212291,382,91208-Jun-201204:08IA-64
Prod_audio-audiocore.ptxmlNot applicable1,44213-Jul-200920:47Not applicable
Audiodg.exe6.1.7601.17858323,07208-Jun-201204:03IA-64
Audioeng.dll6.1.7600.16385518,65614-Jul-200901:45IA-64
Audiokse.dll6.1.7601.17858339,96808-Jun-201204:05IA-64
Audioses.dll6.1.7601.17858607,74408-Jun-201204:05IA-64
Audiosrv.dll6.1.7601.178581,382,91208-Jun-201204:05IA-64
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:06Not applicable
Audiodg.exe6.1.7601.22014323,07208-Jun-201204:09IA-64
Audioeng.dll6.1.7600.16385518,65614-Jul-200901:45IA-64
Audiokse.dll6.1.7601.22014339,96808-Jun-201204:11IA-64
Audioses.dll6.1.7601.22014607,74408-Jun-201204:11IA-64
Audiosrv.dll6.1.7601.220141,382,91208-Jun-201204:11IA-64
Prod_audio-audiocore.ptxmlNot applicable66720-Nov-201004:06Not applicable
Audioeng.dll6.1.7600.17037374,78408-Jun-201204:39x86
Audiokse.dll6.1.7600.17037442,88008-Jun-201204:43x86
Audioses.dll6.1.7600.17037195,58408-Jun-201204:39x86
Prod_wow64_audio-audiocore.ptxmlNot applicable1,44207-Jun-201223:37Not applicable
Audioeng.dll6.1.7600.21229374,78408-Jun-201205:50x86
Audiokse.dll6.1.7600.21229442,88008-Jun-201205:54x86
Audioses.dll6.1.7600.21229195,58408-Jun-201205:50x86
Prod_wow64_audio-audiocore.ptxmlNot applicable1,44207-Jun-201223:36Not applicable
Audioeng.dll6.1.7601.17858374,78408-Jun-201204:40x86
Audiokse.dll6.1.7601.17858442,88008-Jun-201204:43x86
Audioses.dll6.1.7601.17858195,58408-Jun-201204:40x86
Prod_wow64_audio-audiocore.ptxmlNot applicable66707-Jun-201223:34Not applicable
Audioeng.dll6.1.7601.22014374,78408-Jun-201204:19x86
Audiokse.dll6.1.7601.22014442,88008-Jun-201204:22x86
Audioses.dll6.1.7601.22014195,58408-Jun-201204:19x86
Prod_wow64_audio-audiocore.ptxmlNot applicable66707-Jun-201223:34Not 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
Collapse this tableExpand this table
File nameX86_29e6bcb32a3cfd882a1f2e6fc87b617d_31bf3856ad364e35_6.1.7600.17037_none_c1c6ad276be4e851.manifest
File versionNot applicable
File size703
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameX86_951a162f61ae63f9a8e8b396b85eb88b_31bf3856ad364e35_6.1.7601.17858_none_daae5fca5d1c75f7.manifest
File versionNot applicable
File size703
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameX86_a9adb2f2c804e16a3e69b9eeef94f66b_31bf3856ad364e35_6.1.7601.22014_none_8c4eecf5fa88e7c8.manifest
File versionNot applicable
File size703
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameX86_f66076b962568ca196937a4e40b80d29_31bf3856ad364e35_6.1.7600.21229_none_f0a48852d13ceda6.manifest
File versionNot applicable
File size703
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameX86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_76ae0e0045c91e70.manifest
File versionNot applicable
File size88,774
Date (UTC)08-Jun-2012
Time (UTC)23:44
File nameX86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_77447d315edcd21e.manifest
File versionNot applicable
File size88,774
Date (UTC)08-Jun-2012
Time (UTC)23:44
File nameX86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_787ff53c42fea57a.manifest
File versionNot applicable
File size88,662
Date (UTC)08-Jun-2012
Time (UTC)23:44
File nameX86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_7930a8b15bffa366.manifest
File versionNot applicable
File size88,662
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
Collapse this tableExpand this table
File nameAmd64_3a97ed1ae5481b510f054d53f3803d61_31bf3856ad364e35_6.1.7601.22014_none_d66cecb26f3a949b.manifest
File versionNot applicable
File size1,056
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameAmd64_7194b7bfccda9541f3c2f002d09f66a9_31bf3856ad364e35_6.1.7601.17858_none_6cb2c1ba45c97b18.manifest
File versionNot applicable
File size1,056
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameAmd64_e12f9bc1029d8cb7127f2427c3d3c8d3_31bf3856ad364e35_6.1.7600.17037_none_8f83af05282c471d.manifest
File versionNot applicable
File size1,056
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameAmd64_e2d1a3a92761e94a4a700d6f9574bb48_31bf3856ad364e35_6.1.7600.21229_none_ba8179be9b89f2e7.manifest
File versionNot applicable
File size1,056
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameAmd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_d2cca983fe268fa6.manifest
File versionNot applicable
File size88,778
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameAmd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_d36318b5173a4354.manifest
File versionNot applicable
File size88,778
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameAmd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_d49e90bffb5c16b0.manifest
File versionNot applicable
File size88,666
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameAmd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_d54f4435145d149c.manifest
File versionNot applicable
File size88,666
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_dd2153d6328751a1.manifest
File versionNot applicable
File size80,748
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_ddb7c3074b9b054f.manifest
File versionNot applicable
File size80,748
Date (UTC)08-Jun-2012
Time (UTC)23:52
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_def33b122fbcd8ab.manifest
File versionNot applicable
File size75,265
Date (UTC)08-Jun-2012
Time (UTC)05:03
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_dfa3ee8748bdd697.manifest
File versionNot applicable
File size75,265
Date (UTC)08-Jun-2012
Time (UTC)04:40
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_274059f3aa0f4c9a3e4c2c4b940c5979_31bf3856ad364e35_6.1.7601.22014_none_e7391d6f8b942832.manifest
File versionNot applicable
File size1,054
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_36ced18b06dcc9bae898fe7b7d4de093_31bf3856ad364e35_6.1.7600.21229_none_8397b08b24e0f0f5.manifest
File versionNot applicable
File size1,054
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_92298fda939403caad98d2cbc5dc4fff_31bf3856ad364e35_6.1.7601.17858_none_68f52d9881d20b5a.manifest
File versionNot applicable
File size1,054
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_d2785a949ed79b3715ad761dca54d49d_31bf3856ad364e35_6.1.7600.17037_none_e303839928da3774.manifest
File versionNot applicable
File size1,054
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_76afb1f645c7276c.manifest
File versionNot applicable
File size87,952
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_774621275edadb1a.manifest
File versionNot applicable
File size87,952
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_7881993242fcae76.manifest
File versionNot applicable
File size87,840
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameIa64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_79324ca75bfdac62.manifest
File versionNot applicable
File size87,840
Date (UTC)08-Jun-2012
Time (UTC)23:37
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.17037_none_dd2153d6328751a1.manifest
File versionNot applicable
File size75,377
Date (UTC)08-Jun-2012
Time (UTC)05:02
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7600.21229_none_ddb7c3074b9b054f.manifest
File versionNot applicable
File size75,377
Date (UTC)08-Jun-2012
Time (UTC)06:14
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.17858_none_def33b122fbcd8ab.manifest
File versionNot applicable
File size75,265
Date (UTC)08-Jun-2012
Time (UTC)05:03
File nameWow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.1.7601.22014_none_dfa3ee8748bdd697.manifest
File versionNot applicable
File size75,265
Date (UTC)08-Jun-2012
Time (UTC)04:40

Properties

Article ID: 2721341 - Last Review: July 11, 2012 - Revision: 1.0
APPLIES TO
  • Windows 7 Ultimate
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertisebeginner KB2721341

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