The UMBus Root Bus Enumerator is a component in the Windows operating system that is responsible for managing the Universal Memory Bus (UMBus), which is a system bus used for connecting memory devices, including non-volatile memory devices such as NVMe (Non-Volatile Memory Express) drives or other memory modules, to the rest of the system. The UMBus Root Bus Enumerator essentially ensures that the operating system can detect and interact with devices connected through this bus.
In many systems, the UMBus Root Bus Enumerator driver is typically installed automatically by Windows as part of the installation process for the operating system. It's part of the Windows plug-and-play framework, meaning it should be detected and configured without needing manual intervention.