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An IEEE 1394 device cannot unload from Device Manager on a Windows Vista-based computer when you unplug the IEEE 1394 device from an IEEE 1394 standard-based external hub

This article has been archived. It is offered "as is" and will no longer be updated.
Consider the following scenario:
  • You connect an IEEE 1394 standard-based camera to an IEEE 1394 standard-based external hub.
  • You connect the IEEE 1394 standard-based external hub to an IEEE 1394 standard-based port on a computer that is running Windows Vista.
In this scenario, Device Manager in Windows Vista displays the camera device as expected. However, when you unplug the camera cable, the camera device does not unload successfully in Device Manager.

Note If you unplug the cable from the external 1394 hub that is connected to the IEEE 1394 standard-based port, the camera driver unloads successfully.

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

Hotfixes and security updates that are included in SP2 for Windows Vista Service and for Windows Server 2008

For more information about the hotfixes and the security updates that are included in SP2 for Windows Vista and for Windows Server 2008, visit the following Microsoft TechNet Web site: -Note:Currently, the list of hotfixes and security updates is available only in English.

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, 32-bit versions
File nameFile versionFile sizeDateTimePlatform
X86_1394.inf_31bf3856ad364e35_6.0.6000.20713_none_f9cae5b621e468e1.manifestNot Applicable2,36301-Nov-200720:00Not Applicable
1394bus.sys6.0.6000.2071353,37601-Nov-200701:25Not Applicable
Ohci1394.sys6.0.6000.2071361,95201-Nov-200701:25Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_1394.inf_31bf3856ad364e35_6.0.6000.20713_none_55e98139da41da17.manifestNot Applicable2,36501-Nov-200720:03Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Article ID: 944151 - Last Review: 01/16/2015 17:29:15 - Revision: 2.0

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

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