Composite Bus Enumerator Driver - Windows 11 Service
Multi-Transport Composite Bus Enumerator by Microsoft Corporation.
This service also exists in Windows 10, 7 and 8.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | Composite Bus Enumerator Driver |
| Service name: | CompositeBus |
| Type: | kernel |
| Path: | %WinDir%\System32\DriverStore\FileRepository\compositebus.inf_amd64_8cf6fa9d3afdfa25\CompositeBus.sys |
| Error control: | normal |
| Group: | Extended Base |
Default Behavior
The Composite Bus Enumerator Driver service is a kernel mode driver. If Composite Bus Enumerator Driver fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the CompositeBus service has failed to start.
Restore Default Startup Type for Composite Bus Enumerator Driver
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreCompositeBusEnumeratorDriverWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the CompositeBus.sys file exists in the %WinDir%\System32\DriverStore\FileRepository\compositebus.inf_amd64_8cf6fa9d3afdfa25 folder. If this file is missing you can try to restore it from your Windows 11 installation media.