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This article describes an issue that occurs after you upgrade your computer from Windows 8, Windows RT, or Windows Server 2012 to Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. A hotfix is available to resolve this issue. The hotfix has a prerequisite.

Cause

This issue occurs because the multimedia class driver registry keys are overwritten with the stale values from the previous operating system during the upgrade of the operating system.

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 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.

Prerequisites

To apply this hotfix, you must have update 2919355 installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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

    6.3.960 0.17 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • 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" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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 8.1

File name

File version

File size

Date

Time

Platform

Audiodg.exe

6.3.9600.17415

213,336

29-Oct-2014

03:07

x86

Audioendpointbuilder.dll

6.3.9600.17630

193,536

10-Jan-2015

06:25

x86

Audioeng.dll

6.3.9600.17415

424,544

29-Oct-2014

03:07

x86

Audiokse.dll

6.3.9600.17415

344,536

29-Oct-2014

03:07

x86

Audioses.dll

6.3.9600.17415

370,424

29-Oct-2014

03:07

x86

Audiosrv.dll

6.3.9600.17415

694,272

29-Oct-2014

00:49

x86

Encdump.dll

5.0.1.1

108,944

10-Jan-2015

08:27

x86

Prod_audio-audiocore.ptxml

Not applicable

667

21-Aug-2013

23:39

Not applicable

Audmigplugin.dll

6.3.9600.17630

66,560

10-Jan-2015

07:10

x86

Gm.dls

Not applicable

3,440,660

18-Jun-2013

12:17

Not applicable

Midimap.dll

6.3.9600.17415

18,944

29-Oct-2014

01:58

x86

Mmci.dll

6.3.9600.17630

66,048

10-Jan-2015

07:22

x86

Mmcico.dll

6.3.9600.17415

11,264

29-Oct-2014

01:57

x86

Msacm32.drv

6.3.9600.17415

23,040

29-Oct-2014

01:54

Not applicable

Audiommecore-other-migration-replacement.man

Not applicable

1,133

18-Jun-2013

12:21

Not applicable

Audmigplugin.dll

6.3.9600.17630

68,608

10-Jan-2015

07:09

x86

Mfmpeg2srcsnk-migration-replacement.man

Not applicable

1,030

15-Jul-2013

16:54

Not applicable

Mfsrcsnk-migration-replacement.man

Not applicable

1,164

15-Jul-2013

16:54

Not applicable

Sounds-migration-replacement.man

Not applicable

2,423

18-Jun-2013

12:21

Not applicable

Winmde-migration-replacement.man

Not applicable

1,016

15-Jul-2013

16:54

Not applicable

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Audiodg.exe

6.3.9600.17415

272,248

29-Oct-2014

03:52

x64

Audioendpointbuilder.dll

6.3.9600.17630

230,400

10-Jan-2015

06:38

x64

Audioeng.dll

6.3.9600.17415

482,872

29-Oct-2014

03:52

x64

Audiokse.dll

6.3.9600.17415

394,120

29-Oct-2014

03:52

x64

Audioses.dll

6.3.9600.17415

500,016

29-Oct-2014

03:52

x64

Audiosrv.dll

6.3.9600.17415

911,360

29-Oct-2014

01:02

x64

Encdump.dll

5.0.1.1

108,944

10-Jan-2015

09:09

x64

Prod_audio-audiocore.ptxml

Not applicable

667

22-Aug-2013

06:45

Not applicable

Audmigplugin.dll

6.3.9600.17630

81,408

10-Jan-2015

07:46

x64

Gm.dls

Not applicable

3,440,660

18-Jun-2013

14:41

Not applicable

Midimap.dll

6.3.9600.17415

23,552

29-Oct-2014

02:42

x64

Mmci.dll

6.3.9600.17630

73,728

10-Jan-2015

08:02

x64

Mmcico.dll

6.3.9600.17415

14,336

29-Oct-2014

02:41

x64

Msacm32.drv

6.3.9600.17415

26,624

29-Oct-2014

02:37

Not applicable

Audiommecore-other-migration-replacement.man

Not applicable

1,133

18-Jun-2013

14:45

Not applicable

Audmigplugin.dll

6.3.9600.17630

81,408

10-Jan-2015

07:46

x64

Mfmpeg2srcsnk-migration-replacement.man

Not applicable

1,030

15-Jul-2013

16:54

Not applicable

Mfsrcsnk-migration-replacement.man

Not applicable

1,164

15-Jul-2013

16:54

Not applicable

Sounds-migration-replacement.man

Not applicable

2,423

18-Jun-2013

14:45

Not applicable

Winmde-migration-replacement.man

Not applicable

1,016

15-Jul-2013

16:54

Not applicable

Audioeng.dll

6.3.9600.17415

424,544

29-Oct-2014

03:07

x86

Audiokse.dll

6.3.9600.17415

344,536

29-Oct-2014

03:07

x86

Audioses.dll

6.3.9600.17415

370,424

29-Oct-2014

03:07

x86

Prod_wow64_audio-audiocore.ptxml

Not applicable

667

21-Aug-2013

23:39

Not applicable

Audiommecore-other-migration-replacement.man

Not applicable

1,133

18-Jun-2013

12:21

Not applicable

Audmigplugin.dll

6.3.9600.17630

68,608

10-Jan-2015

07:09

x86

Mfmpeg2srcsnk-migration-replacement.man

Not applicable

1,030

15-Jul-2013

16:54

Not applicable

Mfsrcsnk-migration-replacement.man

Not applicable

1,164

15-Jul-2013

16:54

Not applicable

Sounds-migration-replacement.man

Not applicable

2,423

18-Jun-2013

12:21

Not applicable

Winmde-migration-replacement.man

Not applicable

1,016

15-Jul-2013

16:54

Not applicable

Audmigplugin.dll

6.3.9600.17630

66,560

10-Jan-2015

07:10

x86

Gm.dls

Not applicable

3,440,660

18-Jun-2013

12:17

Not applicable

Midimap.dll

6.3.9600.17415

18,944

29-Oct-2014

01:58

x86

Mmci.dll

6.3.9600.17630

66,048

10-Jan-2015

07:22

x86

Mmcico.dll

6.3.9600.17415

11,264

29-Oct-2014

01:57

x86

Msacm32.drv

6.3.9600.17415

23,040

29-Oct-2014

01:54

Not applicable

For all supported ARM-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Audiodg.exe

6.3.9600.17393

186,528

07-Oct-2014

02:50

Not applicable

Audioendpointbuilder.dll

6.3.9600.17630

167,936

10-Jan-2015

06:12

Not applicable

Audioeng.dll

6.3.9600.17393

389,504

07-Oct-2014

02:50

Not applicable

Audiokse.dll

6.3.9600.17393

245,912

07-Oct-2014

02:50

Not applicable

Audioses.dll

6.3.9600.17393

334,800

07-Oct-2014

02:50

Not applicable

Audiosrv.dll

6.3.9600.17393

598,016

07-Oct-2014

01:15

Not applicable

Encdump.dll

5.0.1.1

92,448

10-Jan-2015

07:37

Not applicable

Prod_audio-audiocore.ptxml

Not applicable

667

21-Aug-2013

23:33

Not applicable

Audmigplugin.dll

6.3.9600.17630

63,488

10-Jan-2015

06:46

Not applicable

Gm.dls

Not applicable

3,440,660

18-Jun-2013

14:43

Not applicable

Midimap.dll

6.3.9600.17630

17,920

10-Jan-2015

07:03

Not applicable

Mmci.dll

6.3.9600.17630

65,536

10-Jan-2015

06:54

Not applicable

Mmcico.dll

6.3.9600.16384

11,776

22-Aug-2013

03:08

Not applicable

Msacm32.drv

6.3.9600.16384

22,016

22-Aug-2013

03:06

Not applicable

Audiommecore-other-migration-replacement.man

Not applicable

1,133

18-Jun-2013

14:47

Not applicable

Audmigplugin.dll

6.3.9600.17630

63,488

10-Jan-2015

06:46

Not applicable

Mfmpeg2srcsnk-migration-replacement.man

Not applicable

1,030

15-Jul-2013

16:54

Not applicable

Mfsrcsnk-migration-replacement.man

Not applicable

1,164

15-Jul-2013

16:54

Not applicable

Sounds-migration-replacement.man

Not applicable

2,423

18-Jun-2013

14:48

Not applicable

Winmde-migration-replacement.man

Not applicable

1,016

15-Jul-2013

16:54

Not applicable

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_507aa4df3f09f61ab67e7cd62417afbc_31bf3856ad364e35_6.3.9600.17630_none_c32de03c2dbb7774.manifest

File version

Not applicable

File size

707

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

X86_8b2d73028e1cd227420021d55bc7796d_31bf3856ad364e35_6.3.9600.17630_none_bf20f8641c8e173d.manifest

File version

Not applicable

File size

725

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

X86_cdad81ce0cfaafe0dcc79a958b8f36c6_31bf3856ad364e35_6.3.9600.17630_none_f5e1792db349ce26.manifest

File version

Not applicable

File size

703

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

X86_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.3.9600.17630_none_0b71860c0014751d.manifest

File version

Not applicable

File size

128,905

Date (UTC)

10-Jan-2015

Time (UTC)

19:24

Platform

Not applicable

File name

X86_microsoft-windows-audio-mmecore-other_31bf3856ad364e35_6.3.9600.17630_none_21cf89e92c0496e9.manifest

File version

Not applicable

File size

8,422

Date (UTC)

10-Jan-2015

Time (UTC)

19:24

Platform

Not applicable

File name

X86_microsoft-windows-m..entmanifests-avcore_31bf3856ad364e35_6.3.9600.17630_none_831c1c0a7ccb106f.manifest

File version

Not applicable

File size

7,135

Date (UTC)

10-Jan-2015

Time (UTC)

08:34

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_1d41be603e84f264c40bf99220fbd03b_31bf3856ad364e35_6.3.9600.17630_none_c9b166e6f57cbcaf.manifest

File version

Not applicable

File size

729

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Amd64_5ac3f26cd3c260881c6b8453b6bd48bc_31bf3856ad364e35_6.3.9600.17630_none_0bbc70713cc0e7d0.manifest

File version

Not applicable

File size

1,062

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Amd64_8c3428300691702701a9fa68a249434c_31bf3856ad364e35_6.3.9600.17630_none_bdf4ba03fb4bf6c7.manifest

File version

Not applicable

File size

729

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Amd64_a939ea36ba4c692a59f4b73d5e8e3bd1_31bf3856ad364e35_6.3.9600.17630_none_8fa9365877eac71c.manifest

File version

Not applicable

File size

1,056

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Amd64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.3.9600.17630_none_6790218fb871e653.manifest

File version

Not applicable

File size

128,909

Date (UTC)

10-Jan-2015

Time (UTC)

19:27

Platform

Not applicable

File name

Amd64_microsoft-windows-audio-mmecore-other_31bf3856ad364e35_6.3.9600.17630_none_7dee256ce462081f.manifest

File version

Not applicable

File size

8,426

Date (UTC)

10-Jan-2015

Time (UTC)

19:27

Platform

Not applicable

File name

Amd64_microsoft-windows-m..entmanifests-avcore_31bf3856ad364e35_6.3.9600.17630_none_df3ab78e352881a5.manifest

File version

Not applicable

File size

7,137

Date (UTC)

10-Jan-2015

Time (UTC)

09:16

Platform

Not applicable

File name

Wow64_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.3.9600.17630_none_71e4cbe1ecd2a84e.manifest

File version

Not applicable

File size

120,044

Date (UTC)

10-Jan-2015

Time (UTC)

19:27

Platform

Not applicable

File name

Wow64_microsoft-windows-m..entmanifests-avcore_31bf3856ad364e35_6.3.9600.17630_none_e98f61e0698943a0.manifest

File version

Not applicable

File size

7,137

Date (UTC)

10-Jan-2015

Time (UTC)

08:34

Platform

Not applicable

File name

X86_microsoft-windows-audio-mmecore-other_31bf3856ad364e35_6.3.9600.17630_none_21cf89e92c0496e9.manifest

File version

Not applicable

File size

8,422

Date (UTC)

10-Jan-2015

Time (UTC)

19:27

Platform

Not applicable

Additional files for all supported ARM-based versions of Windows 8.1

File property

Value

File name

Arm_278718e43a0d292fac82f56e7fc9c62f_31bf3856ad364e35_6.3.9600.17630_none_7aaa4dab9013a4fb.manifest

File version

Not applicable

File size

725

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Arm_5c1e65a9023bff67b1d87cbae60b7281_31bf3856ad364e35_6.3.9600.17630_none_714fea870c234daa.manifest

File version

Not applicable

File size

707

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Arm_6834d40660b59d3b0cad3f85f1fb4146_31bf3856ad364e35_6.3.9600.17630_none_289fcfd3215cd87e.manifest

File version

Not applicable

File size

703

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Arm_microsoft-windows-audio-audiocore_31bf3856ad364e35_6.3.9600.17630_none_0b73f864001193e3.manifest

File version

Not applicable

File size

128,905

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Arm_microsoft-windows-audio-mmecore-other_31bf3856ad364e35_6.3.9600.17630_none_21d1fc412c01b5af.manifest

File version

Not applicable

File size

8,422

Date (UTC)

10-Jan-2015

Time (UTC)

19:20

Platform

Not applicable

File name

Arm_microsoft-windows-m..entmanifests-avcore_31bf3856ad364e35_6.3.9600.17630_none_831e8e627cc82f35.manifest

File version

Not applicable

File size

7,135

Date (UTC)

10-Jan-2015

Time (UTC)

07:43

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

See the terminology that Microsoft uses to describe software updates.

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