Composite Bus Enumerator Driver (CompositeBus) Service Defaults in Windows 7

Multi-Transport Composite Bus Enumerator by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Composite Bus Enumerator Driver
Service name:CompositeBus
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\system32\DRIVERS\CompositeBus.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CompositeBus

Default Behavior

Composite Bus Enumerator Driver is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Composite Bus Enumerator Driver fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the CompositeBus service is not running because of the error.

Restore Default Startup Configuration for Composite Bus Enumerator Driver

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config CompositeBus start= demand

3. Close the command window and restart the computer.

The CompositeBus service is using the CompositeBus.sys file that is located in the %WinDir%\system32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.