UMBus Enumerator Driver - Windows 11 Service
User-Mode Bus Enumerator by Microsoft Corporation.
This service also exists in Windows 10, 7, 8 and Vista.
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: | UMBus Enumerator Driver |
| Service name: | umbus |
| Type: | kernel |
| Path: | %WinDir%\System32\DriverStore\FileRepository\umbus.inf_amd64_914dd46b4b013b1b\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 11 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 11 edition and release, and then click on the Download button below.
2. Save the RestoreUMBusEnumeratorDriverWindows11.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 umbus.sys file exists in the %WinDir%\System32\DriverStore\FileRepository\umbus.inf_amd64_914dd46b4b013b1b folder. If this file is missing you can try to restore it from your Windows 11 installation media.