batcmd.com Windows Vista Services

Microsoft Multi-Path Bus Driver - Windows Vista Service

MultiPath Support Bus-Driver by Microsoft Corporation.

This service also exists in Windows 7.

Startup Type

Since Microsoft Multi-Path Bus Driver is a kernel mode driver, its startup might be configured depending on installed hardware. Changing its startup configuration might cause hardware issues. In the table below you can see how it is configured on my system, but your default settings might differ from mine.

Windows Vista edition without SP SP1 SP2
Starter Disabled Disabled Disabled
Home Basic Disabled Disabled Disabled
Home Premium Disabled Disabled Disabled
Business Disabled Disabled Disabled
Ultimate Disabled Disabled Disabled

Default Properties

Display name:Microsoft Multi-Path Bus Driver
Service name:mpio
Type:kernel
Path:%WinDir%\system32\drivers\mpio.sys
Error control:normal
Group:Boot Bus Extender

Default Behavior

Microsoft Multi-Path Bus Driver is a kernel mode driver. If Microsoft Multi-Path Bus Driver fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the mpio service has failed to start.

Restore Default Startup Type for Microsoft Multi-Path Bus Driver

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreMicrosoftMultiPathBusDriverWindowsVista.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 to save changes.

Note. Make sure that the mpio.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows Vista installation media.