batcmd.com Windows 8 Services

Superfetch - Windows 8 Service

Maintains and improves system performance over time.

This service also exists in Windows 10, 7 and Vista.

Startup Type

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

Default Properties

Display name:Superfetch
Service name:SysMain
Type:share
Path:%WinDir%\system32\svchost.exe -k LocalSystemNetworkRestricted
File:%WinDir%\system32\sysmain.dll
Error control:ignore
Object:LocalSystem
Privileges:
  • SeTcbPrivilege
  • SeProfileSingleProcessPrivilege
  • SeTakeOwnershipPrivilege
  • SeDebugPrivilege
  • SeIncreaseBasePriorityPrivilege

Default Behavior

The Superfetch service runs as LocalSystem in a shared process of svchost.exe. Other services might run in the same process. If Superfetch fails to load or initialize, Windows 8 start up proceeds. No warning is displayed, but the error is recorded into the Event Log.

Dependencies

Superfetch won't start, if the following services are stopped or disabled:

Restore Default Startup Type for Superfetch

Automated Restore

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

2. Save the RestoreSuperfetchWindows8.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 sysmain.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows 8 installation media.