6.2.9200.16384 (win8_rtm.120725-1247) 5.40%
6.1.7600.16385 (win7_rtm.090713-1255) 39.41%
6.1.7600.16385 (win7_rtm.090713-1255) 54.34%
5.1.2600.5512 (xpsp.080413-2111) 0.85%



Windows Session Manager by Microsoft

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


There are 4 versions of smss.exe in the wild, the latest version being 6.2.9200.16384 (win8_rtm.120725-1247). smss.exe is run as a standard windows process in the context of the SYSTEM account with extensive privileges. The average file size is about 78.5 KB. During the process's lifecycle, the typical CPU resource utilization is about 0.0005% including both foreground and background operations, the average private memory consumption is about 401.18 KB with the maximum memory reaching around 918.14 KB. Addionally, typically read and write I/O disk operations is about 713 Bytes per minute for reads and 10 Bytes per minute for writes.

What is smss.exe?

When a client first tries to access a protected resource that is hosted by a relying party, the client must first authenticate itself to a security token service (STS) that is trusted by the relying party. The STS then issues a security token to the client. The client presents this token to the relying party, which then grants the client access to the protected resource. However, you don’t want the client to have to re-authenticate to the STS for each request, especially because it might not eve

About smss.exe (from Microsoft)

HTTP, the underlying transport of the Web, is a memory-less protocol. Every time a client requests an application, HTTP has no idea of the caller's identity—it simply forwards the request to the Web s


File name:smss.exe
Publisher:Microsoft Corporation
Product name:Windows Session Manager
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\smss.exe
Original name:smss.exe.mui

VersionsAll file variations of smss.exe

MD5SHA-1File size
8e5870b864c38a3b766f9f0a23fb70c4 b539888d0a5b45f2e9dcdab23296a455e90b54bd 86.5 KB
16742790895960690237a5143cedec8b a81b48a5d6a06543ed36b7e6ea75c5e52b79dd37 68 KB
1911a3356fa3f77ccc825ccbac038c2a 706473ad489e5365af1e3431c4f8fe80a9139bc2 110 KB
b3efde4b2cc3ac949bcde7a89712afcf b786d64cb24367e1e03bbc6fd00c4d0defacc911 49.5 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Ultimate 38.00%
Windows 7 Home Premium 35.75%
Windows 7 Professional 9.25%
Windows 8 Pro 5.75%
Windows 7 Home Basic 2.25%
Windows 7 Ultimate N 2.25%
Windows 7 Starter 2.00%
Windows 7 Enterprise 1.25%
Windows 8 0.75%
Windows 8 Enterprise 0.75%
Windows 8 Enterprise Evaluation 0.50%
Windows 8 Pro with Media Center 0.50%
Windows Seven Black Edition 0.50%
Windows 8 Pro N 0.25%
Microsoft Windows 7 Professional 0.25%

Distribution by countryDistribution by country

United States installs about 33.24% of Windows Session Manager.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 20.81%
Hewlett-Packard 20.81%
Acer 14.72%
ASUS 11.68%
Toshiba 10.66%
Lenovo 6.60%
Sony 3.05%
Samsung 2.28%
Intel 2.03%
MSI 1.02%
American Megatrends 0.76%
Sahara 0.51%
Medion 0.51%
Compaq 0.51%
Gateway 0.51%
Packard Bell 0.25%
Alienware 0.25%
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