Summary

This update lets OEMs prevent specific non-video AVStream devices from being exposed and used as cameras by modern applications on Windows 8.1 devices.

Update information

A supported update is available from Microsoft Support.

If the update 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 update is available. If you do not see your language, it is because an update is not available for that language.

Registry information

This update lets a registry key change the behavior of the Usbvideo.sys driver against certain USB camera devices. If the registry key is set for a nonzero value for a specific non-video AVStream device, that device will not be exposed as a video camera to the AVStream API. Therefore, any modern applications that use the typical Windows Runtime MediaCapture API are no longer able to see that specific device.

Registry location:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\USB\VID_xxxx&PID_xxxx\instance-id\Device Parameters
Note The xxxx placeholders indicate values that are related to a specific camera device.

DWORD Name: SkipCameraEnumeration
Value Data: Any nonzero value

Prerequisites

To apply this update, you must first have update 2919355 installed in Windows 8.1.

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 8.1 file information and notesImportant Windows 8.1 and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" 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 8.1" 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 8.1

    RTM

    GDR

  • 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 8.1" 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 8.1

File name

File version

File size

Date

Time

Platform

Usbvideo.sys

6.3.9600.17217

177,152

21-Jun-2014

06:27

Not Applicable

For all supported x64-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Usbvideo.sys

6.3.9600.17217

212,736

21-Jun-2014

07:33

x64

Additional file information for Windows 8.1

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

File name

X86_usbvideo.inf_31bf3856ad364e35_6.3.9600.17217_none_c2ea4cafd5f20466.manifest

File version

Not Applicable

File size

2,110

Date (UTC)

21-Jun-2014

Time (UTC)

09:37

SHA-1 hash

Not Applicable

MD5 hash

Not Applicable

Additional files for all supported x64-based versions of Windows 8.1

File name

Amd64_usbvideo.inf_31bf3856ad364e35_6.3.9600.17217_none_1f08e8338e4f759c.manifest

File version

Not Applicable

File size

2,114

Date (UTC)

21-Jun-2014

Time (UTC)

11:49

SHA-1 hash

Not Applicable

MD5 hash

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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