Note If the update is installed, you should find WinUSB v1.9 (KB971286) in the list of installed updates. To verify that the update is successfully installed on a computer that is running Windows Vista or Windows Server 2008, follow these steps:Ĭlick Start, and then click Control Panel.Ĭlick Programs and Features, and then click View Installed Updates. General information about WinUSB More Information During driver package installation, the package checks the computer to determine what version of WinUSB is currently installed, and then the package updates the files to 1.9 if they are an older version.įor more information about WinUSB and the versions that are included with various versions of Windows, visit the following Microsoft Developer Network (MSDN) website:

Note WinUSB driver packages that are built by using Windows Driver Kit for Windows 7 can automatically redistribute and install version 1.9 of the files. The WinUSB architecture consists of a kernel-mode driver (Winusb.sys) and a user-mode dynamic link library (Winusb.dll). Windows USB (WinUSB) is a generic driver for USB devices that was developed at the same time as Windows Driver Foundation (WDF) for Windows XP Service Pack 2 (SP2). This article introduces an update that installs version 1.9 of the WinUSB driver file and of the WinUSB library file on Windows operating systems.

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