When you connect a WinUSB device, the system reads device information and loads Winusb.sys automatically.įor more information, see WinUSB Device. Such a device is called a WinUSB device and does not require you to write a custom INF file that references in-box Winusb.inf. If you are a customer experiencing USB problems, see Troubleshoot common USB problems Automatic installation of WinUSB without an INF fileĪs an OEM or independent hardware vendor (IHV), you can build your device so that the Winusb.sys gets installed automatically on Windows 8 and later versions of the operating system.
