Microsoft Storage Spaces SMP (smphost) Service Defaults in Windows 8

Host service for the Microsoft Storage Spaces management provider. If this service is stopped or disabled, Storage Spaces cannot be managed.

Default Settings

Startup type:Manual
Display name:Microsoft Storage Spaces SMP
Service name:smphost
Service type:own
Error control:normal
Object:NT AUTHORITY\NetworkService
Path:%SystemRoot%\System32\svchost.exe -k smphost
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\smphost

Default Behavior

The Microsoft Storage Spaces SMP service is a Win32 program that can be started by the Service Controller and that obeys the service control protocol. In Windows 8 it will not be started until the user starts it. When the Microsoft Storage Spaces SMP service is started, it runs as NT AUTHORITY\NetworkService in its own process of svchost.exe. If Microsoft Storage Spaces SMP fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the smphost service hasn't been started.


Microsoft Storage Spaces SMP can't start, if the Remote Procedure Call (RPC) service is disabled or not available.

Restore Default Startup Configuration for Microsoft Storage Spaces SMP

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_smphost_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The smphost service is using the smphost.dll file that is located in the %WinDir%\System32 folder. If the file is corrupted or deleted, you can put it back in there.