The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The following files are available for download from the Microsoft Download Center:Īll supported x86-based versions of Windows 8.1 or of Windows 8Īll supported 圆4-based versions of Windows 8.1 or of Windows 8įor more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:ġ19591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Resolution Update information How to obtain this update Microsoft Download Center This issue occurs because the legacy 1394 bus drivers (1394bus.sys and Ochi1394.sys) are removed in Windows 8.1 or Windows 8. 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. SymptomsĪssume that you have a computer that equips with an IEEE 1394 FireWire controller card.

Additional steps of configuration is required to enable this update after the installation. This article describes an issue that occurs when you use a FireWire port-based device in Windows 8.1 or Windows 8.

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