Mellanox ConnectX Bus Enumerator - Windows 11 Service
This service exists in Windows 11 only.
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: | Mellanox ConnectX Bus Enumerator |
| Service name: | mlx4_bus |
| Type: | kernel |
| Path: | %WinDir%\System32\drivers\mlx4_bus.sys |
| Error control: | normal |
| Group: | NDIS |
Default Behavior
The Mellanox ConnectX Bus Enumerator service is a kernel mode driver. If Mellanox ConnectX Bus Enumerator fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the mlx4_bus service has failed to start.
Restore Default Startup Type for Mellanox ConnectX Bus Enumerator
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreMellanoxConnectXBusEnumeratorWindows11.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 mlx4_bus.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 11 installation media.