Windows 7 Services

UMBus Enumerator Driver - Windows 7 Service

User-Mode Bus Enumerator by Microsoft Corporation.

This service also exists in Windows 10, 8 and Vista.

Startup Type

Windows 7 edition without SP SP1
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Default Properties

Display name:UMBus Enumerator Driver
Service name:umbus
Error control:normal
Group:Extended Base

Default Behavior

The UMBus Enumerator Driver service is a kernel driver. If the UMBus Enumerator Driver fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the umbus service has failed to start.

Restore Default Startup Type of UMBus Enumerator Driver

Automated Restore

1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.

2. Save the RestoreUMBusEnumeratorDriverWindows7.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 to save changes.

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 7 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.