VersionsVersions

6.3.9600.16384 (winblue_rtm.130821-1623) 1.72%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.09%
6.3.9600.16384 (winblue_rtm.130821-1623) 2.75%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.09%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.19%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.03%
6.2.9200.16384 (win8_rtm.120725-1247) 2.59%
6.2.9200.16384 (win8_rtm.120725-1247) 15.63%
6.2.9200.16384 (win8_rtm.120725-1247) 0.53%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.12%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.09%
6.2.8250.0 (winmain_win8beta.120217-1520) 0.03%
6.2.8102.0 (winmain_win8m3.110823-1455) 0.06%
6.1.7600.16385 (win7_rtm.090713-1255) 3.84%
6.1.7600.16385 (win7_rtm.090713-1255) 49.92%
6.1.7600.16385 (win7_rtm.090713-1255) 11.76%
6.1.7600.16385 (win7_rtm.090713-1255) 4.77%
6.1.7600.16385 (win7_rtm.090713-1255) 0.53%
6.1.7600.16385 (win7_rtm.090713-1255) 0.03%
6.1.7600.16385 (win7_rtm.090713-1255) 0.03%
6.1.7600.16385 (win7_rtm.090713-1255) 0.16%
6.0.6000.16386 (vista_rtm.061101-2205) 0.69%
6.0.6000.16386 (vista_rtm.061101-2205) 0.25%
6.0.6000.16386 (vista_rtm.061101-2205) 3.81%
6.0.6000.16386 (vista_rtm.061101-2205) 0.28%

Relationships

sysmain.dll

Superfetch Service Host by Microsoft

Remove sysmain.dll
This is a Windows system installed file with Windows File Protection (WFP) enabled.

Overview

sysmain.dll has 25 known versions, the most recent one is 6.3.9600.16384 (winblue_rtm.130821-1623). The average file size is about 1.1 MB.

What is sysmain.dll?

SuperFetch is a technology that pre-loads commonly used applications into memory to reduce their load times. SuperFetch attempts to load commonly used libraries and application components into memory before they are required. It does so by continually analyzing application behavior and usage patterns.

DetailsDetails

File name:sysmain.dll
Publisher:Microsoft Corporation
Product name:Superfetch Service Host
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\sysmain.dll
Original name:sysmain.dll.mui

BehaviorsBehaviors

(Note, the behaviors below are for all versions of sysmain.dll, select a unique version for details.)
Autoplay handlers
Runs under the registry key 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers'
  • Handler name 'MSCreateRdbCache'
Hosted services
Runs as a shared service under the Windows svcHost
  • Shared name is 'SysMain'
  • Shared name is 'SysMain'
  • Shared name is 'SysMain'
  • Shared name is 'SysMain'
  • Shared name is 'SysMain'

VersionsAll file variations of sysmain.dll

MD5SHA-1File size
e45da7cbba34510c8b9473ad7d4ffd0b bd3abd5c7f7970271d53a09b2abe5b6fb7b93e80 1.19 MB
beef3a07219c3dc1337e8900265b4728 c0eccb3360f89dbbda9c1de1eda81a65319c763f 922 KB
3da26652b12e9ab43fd04976ac6dfd33 56395db35625d99463c8aea23d0b1eefbeeb692e 1.14 MB
3c2b9c8ea210f014563bf6391596d8f7 22fc45f93f8bbf2d50c6728873076a0cefdf6b90 1.18 MB
97050397b5aa2f1a654e64f005253585 adfbe7f2aa3aeba4a711fd5189fc9f8c55a090cc 1.17 MB
54553e05c599663c0ae24b6555f73d4d 8ba1cf9ea8d4b8485a4a19a3e994c9fd80f1ddbe 904.5 KB
72effcdaafdb8fb568a56b02d5703b76 8ee5e27eef233946d7b1bdfe258737ba471519f3 1 MB
dc21e1f06343773d7e24362dcef7944b bfdbb74bc9fbef72947c0e6430c7ce6d1b2bc162 1.26 MB
3f2e97730be6855f51e2512b377e346e 9db637a569c6d33898939d291cee3ee592eb7b43 1 MB
4251d18ccf5fc284cbaae1f7534ed5fc f05b1fb54e8d9d8f1828fc739dad67681c985026 1.27 MB
7271e73c74183d745dd36fd8fa1df21e 8e12eea8030fff01bfbdf76208f1a900a10cb253 1 MB
ae9fb549fbabeda51313898e6cae99fa 5c8722a4b341af2d12f99cbe07d3911c8a26b96f 1.03 MB
8174288669b769d388a04e1859136edb 7473f880c51eb24be4132d4052b0d40d401ccb3d 1000 KB
04105c8da62353589c29bdaeb8d88bd8 a9a0d3a55c5faac6330a5cc972b7a369023ca1e2 1.12 MB
bf9ccc0bf39b418c8d0ae8b05cf95b7d 42fb0b19bbe407ad76abf6ff47508c45accbb711 1.66 MB
36650d618ca34c9d357dfd3d89b2c56f f229238d3d4bce50550b2f98f38a7fb2c45d057e 1.11 MB
3c1284516a62078fb68f768de4f1a7be 70113ace0803b2a39fa2b3941789c199aae10f68 1.7 MB
7be4cdea6bc7832bfe3112a350d8b9ea 3a4adf681741a6500282ce8cecd63227350e5ed2 1.66 MB
cb75ac5f4f434e9c1ed3de09124d7b20 5ab4d45a0b9adcabd92c9b855538307dc4235f8b 1.1 MB
25e0900d1b452edeb09b1f9b71195153 a50578e46655cb210c37533cdde30560a671044e 1.66 MB
ed3177b14db39cd26cf7ee7e077bb6a2 4a5a473beb767e1c4d843e3c1fb64b11c4128bfb 1.11 MB
92d7a8b0f87b036f17d25885937897a6 86695a263e6756761c530569f042c8973a6c4dcd 866 KB
8f2b5fede18bd3c4c926cbf88e6f1264 86b9634c4d17d80e738bd4bf8f6ef9da5045d691 530 KB
9a51b04e9886aa4ee90093586b0ba88d 75fc64fd889a85760fd551a0b4a0bfbb948266f4 545 KB
8710a92d0024b03b5fb9540df1f71f1d e0d02c1bd807486600250e2eb307156217f9d591 561.5 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 40.50%
Windows 8.1 17.25%
Windows 7 Ultimate 16.25%
Windows 8.1 Pro 7.75%
Windows 7 Professional 6.50%
Windows 8.1 Single Language 3.25%
Windows 8.1 Pro with Media Center 2.00%
Windows 7 Home Basic 1.50%
Windows Vista Home Premium 1.00%
Windows 8 Enterprise N 0.75%
Windows 8 Single Language 0.75%
Windows 8.1 N 0.50%
Windows Seven Black Edition 0.50%
Windows 8.1 Enterprise Evaluation 0.50%
Windows 7 Starter 0.25%
Windows 8.1 Enterprise 0.25%
Windows 8.1 Pro Preview 0.25%
Windows Vista Home Basic 0.25%

Distribution by countryDistribution by country

United States installs about 48.24% of Superfetch Service Host.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 21.09%
ASUS 19.92%
Hewlett-Packard 18.16%
Acer 12.50%
Toshiba 10.16%
Lenovo 6.25%
Sony 5.08%
GIGABYTE 1.56%
Alienware 1.37%
Samsung 1.17%
Intel 1.17%
Medion 1.17%
Sahara 0.39%
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