Composite Bus Enumerator Driver (CompositeBus) Service Defaults in Windows 8

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

The Composite Bus Enumerator Driver service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Composite Bus Enumerator Driver fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the CompositeBus service hasn't been started.

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 corrupted or deleted, you can put it back in there.