batcmd.com Windows 8 Services

Virtual Machine Bus - Windows 8 Service

Microsoft Hyper-V Virtual Machine Bus Child Driver by Microsoft Corporation.

This service also exists in Windows 10 and 7.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core Manual Manual Manual
Pro Manual Manual Manual
Enterprise Manual Manual Manual

Default Properties

Display name:Virtual Machine Bus
Service name:vmbus
Type:kernel
Path:%WinDir%\System32\drivers\vmbus.sys
Error control:normal
Group:System Bus Extender

Default Behavior

The Virtual Machine Bus service is a kernel mode driver. If Virtual Machine Bus fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the vmbus service has failed to start.

Restore Default Startup Type for Virtual Machine Bus

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreVirtualMachineBusWindows8.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer.

Note. Make sure that the vmbus.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 8 installation media.