Superfetch - Windows 7 Service
Maintains and improves system performance over time.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Automatic | Automatic |
| Home Basic | Automatic | Automatic |
| Home Premium | Automatic | Automatic |
| Professional | Automatic | Automatic |
| Ultimate | Automatic | Automatic |
| Enterprise | 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: |
|
Default Behavior
The Superfetch service runs as LocalSystem in a shared process. It shares the executable file with other services. If the Superfetch fails to load or initialize, Windows 7 startup proceeds. No warning is displayed, but the error is recorded into the Event Log.
Dependencies
Superfetch will not start, if the following services are stopped or disabled:
Restore Default Startup Type of Superfetch
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreSuperfetchWindows7.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 sysmain.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows 7 installation media.