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A Windows Vista-based computer may stop responding if a USB camera is connected

When you start a Windows Vista-based computer that has a USB camera connected, the computer may stop responding. This problem may also occur when you perform an unattended installation of Windows Vista on a computer that has a USB camera connected. This problem occurs if the camera uses the Stream.sys driver.

Note For information about how you can verify that the system uses the Stream.sys driver, see the "More Information" section.

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

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. 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 Web site: 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.


No prerequisites are required.

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 English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Stream.sys6.0.6000.2062552,99222-Jun-200701:15Not Applicable
Update.mumNot Applicable1,99822-Jun-200711:32Not Applicable
X86_8de2d3cd35e05c00f514fa116bfb9b79_31bf3856ad364e35_6.0.6000.20625_none_99b3cefae1db0f0e.manifestNot Applicable69922-Jun-200711:32Not Applicable
X86_microsoft-windows-streamclass_31bf3856ad364e35_6.0.6000.20625_none_5cf7538a53a577c3.manifestNot Applicable3,24922-Jun-200711:33Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_ccf51883d76af8e7c9a4c8d18e1529b9_31bf3856ad364e35_6.0.6000.20625_none_6488960f796ae00f.manifestNot Applicable70322-Jun-200711:32Not Applicable
Amd64_microsoft-windows-streamclass_31bf3856ad364e35_6.0.6000.20625_none_b915ef0e0c02e8f9.manifestNot Applicable3,25522-Jun-200711:38Not Applicable
Update.mumNot Applicable1,99822-Jun-200711:32Not Applicable

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
To verify that the system uses the Stream.sys driver, follow these steps:
  1. Click Start Start button , type verifier in the Start Search box, and then click verifier.exe in the Programs list.

     User Account Control permission If you are prompted for an administrator password or confirmation, type your password or click Continue.
  2. Click Display information about the currently verified drivers, and then click Next.
  3. Click Add, type Stream.sys in the File name box, and then click Open.

    Examine the status of the Stream.sys driver.
    • The system uses the Stream.sys driver if Loaded is listed in the Status column.
    • The system does not use the Stream.sys driver if Never Loaded is listed in the Status column.
  4. Click Stream.sys, and then click Remove.
  5. Click Cancel.
For more information, 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

Article ID: 939331 - Last Review: 05/14/2008 23:39:59 - Revision: 4.1

Windows Vista Home Basic 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Business 64-bit Edition, Windows Vista Enterprise 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Starter, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Business, Windows Vista Enterprise, Windows Vista Ultimate

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