This article describes an issue that occurs when you use a FireWire port-based device in Windows 8.1 or Windows 8. Additional steps of configuration is required to enable this update after the installation.
Assume that you have a computer that equips with an IEEE 1394 FireWire controller card. After you upgrade the computer from Windows 7 to Windows 8.1 or Windows 8, devices that connect to the computer by using a FireWire port do not work.
This issue occurs because the legacy 1394 bus drivers (1394bus.sys and Ochi1394.sys) are removed in Windows 8.1 or Windows 8.
How to obtain this update
Microsoft Download CenterThe following files are available for download from the Microsoft Download Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
|All supported x86-based versions of Windows 8.1 or of Windows 8||Download the package now.|
|All supported x64-based versions of Windows 8.1 or of Windows 8||Download the package now.|
119591 How to obtain Microsoft support files from online servicesMicrosoft 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.
Additional steps of configuration requirementAfter you install the 1394 OHCI Legacy Driver.msi file, follow these steps:
- Right-click the Legacy1394.inf file under one of the following paths based on the computer's architecture:
- C:\Program Files\1394 OHCI Compliant Host Controller (Legacy)\x86_driver
- C:\Program Files\1394 OHCI Compliant Host Controller (Legacy)\x64_driver
- Click Install.
- Open Device Manager in Control Panel.
- Expand IEEE 1394 Bus host controllers, and then locate the host controller.
- Right-click the host controller, and then click Update Driver Software.
The screen shot of the host controller and the Update Driver Software is listed in the following example:
- Click Browse my computer for driver software.
- Click Let me pick from a list of device drivers on my computer.
- Click Generic1394 OHCI compliant host controller (Legacy), and then click the Next button.
- Click the Close button.
PrerequisitesThere are no prerequisites for installing this update.
Registry informationTo apply this update, you do not have to make any changes to the registry.
Restart requirementYou have to restart the computer after you apply this update.
Update replacement informationThis update does not replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Steps of uninstalling the 1394 OHCI Legacy Driver.msi file
- Open Control Panel in the Category view.
- Click Uninstall a program in Control Panel.
- Right-click 1394 OHCI Compliant Host Controller (Legacy), and then click Uninstall.
The screen shot of uninstalling the 1394 OHCI Compliant Host Controller (Legacy) is listed in the following example:
Additional package information
- This driver is only intended to work with legacy 1394 host controllers. Therefore, you may experience lower transfer data rates than the 1394b driver.
- The driver is intended to resolve compatibility issues for 1394 peripherals on 1394b systems. If you are not experiencing these issues, you should continue to use inbox drivers that are provided in Windows 8.1 or Windows 8.
- You have to reinstall this stand-alone driver package if you upgrade to a newer operating system version in the future.
For more information about software update terminology, 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