Should I block it?

No, this file is 100% safe to run.

Additional versions

6.2.9200.16384 (win8_rtm.120725-1247)	2.41%
6.2.9200.16384 (win8_rtm.120725-1247)	13.91%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.09%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.09%
6.2.8250.0 (winmain_win8beta.120217-1520)	0.05%
6.2.8102.0 (winmain_win8m3.110823-1455)	0.09%
6.1.7600.16385 (win7_rtm.090713-1255)	17.61%
6.1.7600.16385 (win7_rtm.090713-1255)	24.28%
6.1.7600.16385 (win7_rtm.090713-1255)	5.82%
6.1.7600.16385 (win7_rtm.090713-1255)	7.15%
6.1.7600.16385 (win7_rtm.090713-1255)	0.95%
6.1.7600.16385 (win7_rtm.090713-1255)	0.62%
6.1.7600.16385 (win7_rtm.090713-1255)	0.05%
6.1.7600.16385 (win7_rtm.090713-1255)	0.05%
6.0.6002.18805 (vistasp2_gdr.130308-1436)	1.66%
6.0.6002.18805 (vistasp2_gdr.130308-1436)	0.57%
6.0.6002.18005 (lh_sp2rtm.090410-1830)	4.92%
6.0.6002.18005 (lh_sp2rtm.090410-1830)	0.85%
6.0.6001.18000 (longhorn_rtm.080118-1840)	0.05%
6.0.6001.18000 (longhorn_rtm.080118-1840)	0.43%
6.0.6000.20597 (vista_ldr.070511-1510)	0.05%
6.0.6000.16386 (vista_rtm.061101-2205)	0.38%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.05%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.09%
5.1.2600.5512 (xpsp.080413-2111)	11.74%
View more
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.24%
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.62%
5.1.2600.5512 (xpsp.080413-2111)	0.09%
5.1.2600.5512 (xpsp.080413-2111)	0.57%
5.1.2600.5512 (xpsp.080413-2111)	0.09%
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.38%
5.1.2600.5512 (xpsp.080413-2111)	0.05%
5.1.2600.5512 (xpsp.080413-2111)	0.19%
5.1.2600.5512 (xpsp.080413-2111)	0.33%
5.1.2600.5512 (xpsp.080413-2111)	0.24%
5.1.2600.3311 (xpsp.080212-0005)	0.09%
5.1.2600.3300 (xpsp.080125-2028)	0.05%
5.1.2600.3244 (xpsp.071030-1537)	0.05%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	2.56%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	0.05%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	0.05%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	0.05%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	0.09%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	0.05%

Relationships

psxss.exe (Microsoft Windows Subsystem for UNIX-based Applications by Microsoft)

smss.exe

Windows Session Manager by Microsoft

Remove smss.exe

Version:	6.1.7600.16385 (win7_rtm.090713-1255)
MD5:	1911a3356fa3f77ccc825ccbac038c2a
SHA1:	706473ad489e5365af1e3431c4f8fe80a9139bc2
SHA256:	6ed135b792c81d78b33a57f0f4770db6105c9ed3e2193629cb3ec38bfd5b7e1b

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

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”

Details

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
File version:	6.1.7600.16385 (win7_rtm.090713-1255)
Product version:	6.1.7600.16385
Size:	110 KB (112,640 bytes)
Digital DNA
Entropy:	6.466511
File packed:	No
.NET CLR:	No

More details

Resource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)

Averages

CPU
Total CPU:	0.00068191%	0.028634%
Kernel CPU:	0.00067138%	0.013761%
User CPU:	0.00001054%	0.014873%
Kernel CPU time:	187,594 ms/min	100,923,805ms/min
CPU cycles:	35,344/sec	17,470,203/sec
Context switches:	2/sec	284/sec
Memory
Private memory:	530.62 KB	21.59 MB
Private (maximum):	1.12 MB
Private (minimum):	820.9 KB
Non-paged memory:	530.62 KB	21.59 MB
Virtual memory:	5 MB	140.96 MB
Virtual memory (peak):	18.54 MB	169.69 MB
Working set:	854.98 KB	18.61 MB
Working set (peak):	1.24 MB	37.95 MB
Page faults:	593/min	2,039/min
I/O
I/O read transfer:	690 Bytes/sec	1.02 MB/min
I/O read operations:	1/sec	343/min
I/O write transfer:	15 Bytes/sec	274.99 KB/min
I/O write operations:	1/sec	227/min
I/O other transfer:	108 Bytes/sec	448.09 KB/min
I/O other operations:	6/sec	1,671/min
Resource allocations
Threads:	2	12
Handles:	32	600

Process properties

Integrety level:	System
Platform:	64-bit
Command lines:	\systemroot\system32\smss.exe
Owner:	SYSTEM

Threads

Averages

ntdll.dll
Total CPU:	0.00569860%	0.272967%
Kernel CPU:	0.00569860%	0.107585%
User CPU:	0.00000000%	0.165382%
CPU cycles:	83,458/sec	5,741,424/sec
Memory:	1.66 MB	1.16 MB
smss.exe (main module)
Total CPU:	0.00133106%
Kernel CPU:	0.00129979%
User CPU:	0.00003127%
CPU cycles:	26,981/sec
Memory:	128 KB

Distribution by Windows OS

OS version	distribution
Windows 7 Ultimate	38.00%
Windows 7 Home Premium	34.00%
Windows 7 Professional	9.00%
Windows 8 Pro	8.00%
Windows 7 Home Basic	3.00%
Windows 7 Starter	2.00%
Windows 8	1.50%
Windows 8 Pro with Media Center	1.00%
Windows 8 Enterprise	1.00%
Windows 8 Enterprise Evaluation	0.50%
Windows Seven Black Edition	0.50%
Windows 7 Ultimate N	0.50%
Windows 7 Enterprise	0.50%
Windows 8 Pro N	0.50%

Distribution by country

United States installs about 27.14% of Windows Session Manager.

Distribution by PC manufacturer

PC Manufacturer	distribution
Dell	24.60%
Hewlett-Packard	19.44%
Acer	14.68%
ASUS	10.32%
Toshiba	10.32%
Lenovo	5.56%
Sony	3.17%
Intel	3.17%
GIGABYTE	2.78%
Samsung	1.59%
MSI	1.59%
Sahara	0.79%
American Megatrends	0.79%
Medion	0.79%
Packard Bell	0.40%

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