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Microsoft provides in-box drivers for several of those device classes, called USB device class drivers. Each device class is identified by a USB-IF approved class, subclass, and protocol codes, all of which are provided by the IHV in device descriptors in the firmware. The USB-IF defines those classes and their specifications.

USB device classes are categories of devices with similar characteristics and that perform common functions. More guidelines are included in Choosing a driver model for developing a USB client driver. If a Microsoft-provided driver isn't available for the USB device class to which your device belongs, then consider using generic drivers, Winusb.sys or Usbccgp.sys. If you are writing a custom driver: Before writing a driver for your USB device, determine whether a Microsoft-provided driver meets the device requirements. The drivers are updated through Windows Update. They're available in the \Windows\System32\DriverStore\FileRepository folder. These drivers and their installation files are included in Windows. If you are installing USB drivers: You don't need to download USB device class drivers.

For non-composite devices or a function of a composite device, use WinUSB (Winusb.sys).

For composite devices, use USB Generic Parent Driver (Usbccgp.sys) that creates physical device objects (PDOs) for each function.

Microsoft-provided drivers for USB-IF approved device classes.

This article lists the Microsoft-provided drivers for the supported USB device classes. If you are a customer experiencing USB problems, see Troubleshoot common USB problems If you can't see the desktop and instead see a blue, black, or blank screen, see Troubleshoot blue screen errors or Troubleshoot black or blank screen errors.This topic is for programmers. Windows will attempt to reinstall the driver.

Right-click (or press and hold) the name of the device, and then select Uninstall. If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions. Select Search automatically for updated driver software. Select a category to see names of devices, then right-click (or press and hold) the one you’d like to update.

In the search box on the taskbar, enter device manager, then select Device Manager. You probably already have the most recent drivers, but if you'd like to manually update or reinstall a driver, here's how: Before you beginĭriver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update. If you are having problems with Windows Update, you might see if any of the links at Update Windows can help you out first. Note: The best and safest way to get driver updates in Windows is always through Windows Update.