Mpio Service Defaults in Windows 7
MultiPath Support Bus-Driver by Microsoft Corporation.
Default Settings
| Startup type: | Manual |
| Display name: | Mpio |
| Service name: | mpio |
| Service type: | kernel |
| Error control: | normal |
| Group: | Boot Bus Extender |
| Path: | %SystemRoot%\system32\DRIVERS\mpio.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mpio |
Default Behavior
Mpio is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Mpio fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the mpio service is not running because of the error.
Restore Default Startup Configuration of Mpio
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config mpio start= demand
3. Close the command window and restart the computer.
The mpio service is using the mpio.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.