batcmd.com Windows 8 Services

UMBus Enumerator Driver - Windows 8 Service

User-Mode Bus Enumerator by Microsoft Corporation.

This service also exists in Windows 10, 7 and Vista.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core Manual Manual Manual
Pro Manual Manual Manual
Enterprise Manual Manual Manual

Default Properties

Display name:UMBus Enumerator Driver
Service name:umbus
Type:kernel
Path:%WinDir%\System32\drivers\umbus.sys
Error control:normal
Group:Extended Base

Default Behavior

The UMBus Enumerator Driver service is a kernel mode driver. If UMBus Enumerator Driver fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the umbus service has failed to start.

Restore Default Startup Type for UMBus Enumerator Driver

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreUMBusEnumeratorDriverWindows8.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer.

Note. Make sure that the umbus.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 8 installation media.