This update helps Microsoft improve the experiences when users run stream.sys driver-based applications in Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1, such as the performance and the quality improvements. Check out thePrerequisites before you install this update, and see the "References" section about the steam.sys driver.

How to obtain this update

Important Do not install a language pack after you install this update. If you do, the language-specific changes in the update will not be applied, and you will have to reinstall the update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as an Optional update from Windows Update.

To obtain this update from Windows Update, follow these steps:

  1. Click Start, and then type Update in the search box. In the list of results, click Windows Update.

  2. In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.

  3. If you see a message telling you that optional updates are available, or telling you to review optional updates, click the message to view the optional updates.

  4. In the list, select the check box for update 3054476, click OK, and then click Install updates.

See the frequently asked questions for Windows Update in Windows 7.


Method 2: Microsoft Download CenterThe following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows Server 2008 R2

Download Download the package now.

All supported IA-64-based versions of Windows Server 2008 R2

Download Download the package now.


For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

PrerequisitesTo install this update, you must install Service Pack 1 for Windows 7 or Windows Server 2008 R2.

Registry informationTo apply this update, you do not have to make any changes to the registry.

Restart requirementYou may have to restart the computer after you apply this update.

Update replacement informationThis update does not replace a previously released update.

The global version of this update 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 notes

  • 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 1.18xxx

    Windows 7 or Windows Server 2008 R2

    SP1

    GDR

    6.1.760 1.23 xxx

    Windows 7 or 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" 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 7

File name

File version

File size

Date

Time

Platform

Stream.sys

6.1.7601.18828

54,656

11-Apr-2015

03:07

Not applicable

Stream.sys

6.1.7601.23033

54,656

11-Apr-2015

03:07

Not applicable


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

File name

File version

File size

Date

Time

Platform

Stream.sys

6.1.7601.18828

69,888

11-Apr-2015

03:19

x64

Stream.sys

6.1.7601.23033

69,888

11-Apr-2015

03:27

x64


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

File name

File version

File size

Date

Time

Platform

Stream.sys

6.1.7601.18828

169,344

11-Apr-2015

02:31

Not applicable

Stream.sys

6.1.7601.23033

169,344

11-Apr-2015

02:30

Not applicable


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 property

Value

File name

X86_564775937267b523d4b26de462230bd2_31bf3856ad364e35_6.1.7601.18828_none_56951b60114807ed.manifest

File version

Not applicable

File size

699

Date (UTC)

11-Apr-2015

Time (UTC)

16:26

Platform

Not applicable

File name

X86_b2f6e48ce984fbadf518f445fb5f5a11_31bf3856ad364e35_6.1.7601.23033_none_efa0f0613fc4584c.manifest

File version

Not applicable

File size

699

Date (UTC)

11-Apr-2015

Time (UTC)

16:26

Platform

Not applicable

File name

X86_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.18828_none_60651fc295e95aea.manifest

File version

Not applicable

File size

2,047

Date (UTC)

11-Apr-2015

Time (UTC)

04:58

Platform

Not applicable

File name

X86_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.23033_none_60dec351af13cb34.manifest

File version

Not applicable

File size

2,047

Date (UTC)

11-Apr-2015

Time (UTC)

04:33

Platform

Not applicable


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

File property

Value

File name

Amd64_12af54d33ce84cba6bae1ae32cebf547_31bf3856ad364e35_6.1.7601.18828_none_2d32cc43f0ac909c.manifest

File version

Not applicable

File size

703

Date (UTC)

11-Apr-2015

Time (UTC)

16:26

Platform

Not applicable

File name

Amd64_7aa8da28bc197c4fcb34e780e0da8fc0_31bf3856ad364e35_6.1.7601.23033_none_978dcad07da2c9c5.manifest

File version

Not applicable

File size

703

Date (UTC)

11-Apr-2015

Time (UTC)

16:26

Platform

Not applicable

File name

Amd64_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.18828_none_bc83bb464e46cc20.manifest

File version

Not applicable

File size

2,049

Date (UTC)

11-Apr-2015

Time (UTC)

04:55

Platform

Not applicable

File name

Amd64_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.23033_none_bcfd5ed567713c6a.manifest

File version

Not applicable

File size

2,049

Date (UTC)

11-Apr-2015

Time (UTC)

05:16

Platform

Not applicable


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

File property

Value

File name

Ia64_8804b77e23ae623bc4ed63894e4e7692_31bf3856ad364e35_6.1.7601.23033_none_134a0a4422399930.manifest

File version

Not applicable

File size

701

Date (UTC)

11-Apr-2015

Time (UTC)

16:25

Platform

Not applicable

File name

Ia64_c210a8623389b3cf201ea2871674997c_31bf3856ad364e35_6.1.7601.18828_none_1ae09d7640866ddd.manifest

File version

Not applicable

File size

701

Date (UTC)

11-Apr-2015

Time (UTC)

16:25

Platform

Not applicable

File name

Ia64_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.18828_none_6066c3b895e763e6.manifest

File version

Not applicable

File size

2,048

Date (UTC)

11-Apr-2015

Time (UTC)

04:57

Platform

Not applicable

File name

Ia64_microsoft-windows-streamclass_31bf3856ad364e35_6.1.7601.23033_none_60e06747af11d430.manifest

File version

Not applicable

File size

2,048

Date (UTC)

11-Apr-2015

Time (UTC)

04:08

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

Stream.sys is the webcams codec driver. For more information about the steam.sys and the webcams codec driver, see the Streaming Minidrivers and the Using a webcam.

See the terminology that Microsoft uses to describe software updates.

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