6.3.9431.0 (winmain_bluemp.130615-1214) 2.00%
6.2.9200.16384 (win8_rtm.120725-1247) 94.00%
6.2.9200.16384 (win8_rtm.120725-1247) 4.00%



COM Surrogate by Microsoft Corporation (Signed)

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


wshost.exe has 3 known versions, the most recent one is 6.3.9431.0 (winmain_bluemp.130615-1214). wshost.exe is run as a standard windows process with the logged in user's account privileges. The average file size is about 25.47 KB. It is an authenticode code-signed executable issued to Microsoft Corporation by the certification authority Microsoft Corporation. This is a .NET Common Language Runtime (CLR) assembly. During the process's lifecycle, the typical CPU resource utilization is about 0.0026% including both foreground and background operations, the average private memory consumption is about 4.44 MB with the maximum memory reaching around 14.29 MB. Addionally, typically read and write I/O disk operations is about 3.9 KB per minute for reads and 2.75 KB per minute for writes.

What is wshost.exe?

The wshost.exe process goes by the name COM Surrogate and the only time you're likely even to notice its existence is when it crashes and you get the message COM Surrogate has stopped working. The COM Surrogate is a sacrificial process for a COM object that is run outside of the process that requested it. It does this in case the process it is trying to run crashes and instead of crashing the calling process the COM Surrogate crashes instead and the calling program is uneffected.


File name:wshost.exe
Publisher:Microsoft Corporation
Product name:COM Surrogate
Description:Microsoft® Windows® Operating System
Typical file path:C:\windows\winstore\wshost.exe
Issued to:Microsoft Corporation
Authority (CA):Microsoft Corporation
Effective date:Monday, April 9, 2012
Expiration date:Tuesday, July 9, 2013

VersionsAll file variations of wshost.exe

MD5SHA-1File size
bab032f2c9c051e3148a608c8511d173 07b39053c06d6a9c0ba1098531c7d590080b7c85 27.17 KB
4585afd2b8b15e73c42fe5976a8d4a02 ff49d58f7e21b4c2f05176f7f777c56d720a190d 26.15 KB
93a992b7490e1d9402bcd24b8c4c485e b8b4a2295c1400faa948818fb3f9d5a5ec1b8ee6 23.08 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 8 44.00%
Windows 8 Pro 34.00%
Windows 8 Pro with Media Center 14.00%
Windows 8 Enterprise 4.00%
Windows 8 Single Language 2.00%
Windows 8.1 Pro Preview 2.00%

Distribution by countryDistribution by country

United States installs about 65.31% of COM Surrogate.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Toshiba 26.09%
Hewlett-Packard 21.74%
Dell 17.39%
Acer 10.87%
Sony 8.70%
ASUS 8.70%
Intel 4.35%
American Megatrends 2.17%
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