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What is msiexec.exe?

Part of Windows Installer - Unicode by Microsoft

What is it?

Microsoft Windows Installer is an installation and configuration service provided with Windows. The installer service enables customers to provide better corporate deployment and provides a standard format for component management. The installer also enables the advertisement of applications and features according to the operating system.
(msiexec.exe is a system file that is installed with Windows)
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How does msiexec.exe run?

Service - msiexec.exe runs as a background Windows service called 'msiserver' (Windows Installer -ohjelma). This is a system service that is installed with the Windows operating system and protected with Window's File Protection. This service runs as the SYSTEM account with extensive privileges on the local computer, and acts as the computer on the network. Windows Installer -ohjelma runs as a program that can be started by the Service Controller and that obeys the service control protocol. This type of service runs in a process by itself.

How does msiexec.exe start?

Scheduled task - msiexec.exe is launched automatically by registering itself into the Windows Task Scheduler under the task name '\{E7F58D98-807C-426A-8F92-2766A35F2221}'. Task Scheduler provides the ability to schedule the launch of programs or scripts at pre-defined times or after specified time intervals or even with event-based triggers.
Internet Explorer BHO - The msiexec.exe BHO has a registered CLSID of {127AD70F-B2B7-4f6a-ACD9-C7B1FE48C8C0}. A Browser Helper Object (BHO) is a module designed as a plugin for Microsoft's Internet Explorer web browser to provide added functionality. A BHO can introduce visible changes to a IE's interface, such as installing toolbars, but it can also run without any change to the interface.


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the msiexec.exe process running.Of the 0.2% of msiexec.exe users, less than 1% have disabled it.
How stable is Windows Installer - Unicode?
Based on crash data discovered by Boost, stability is a measure of how sound this particular process and the average percent of times it crashes.
Typical program1.26%
How resource intensive is msiexec.exe?
Comparison based on the average resource utilization across all programs.
0.27904% CPU2790379.0%
Average CPU utilization across all programs is 0.00001%.
27.92 MB RAM129.6%
Average private memory utilization across all programs is 21.53 MB.
 3 /min0.1%
Average I/O read and write operations for all programs is 2,253 per minute.
149 context switches/sec149.0%
Average context switches for all programs is 100 per second.
Typical file (disk image) location:

Are there other versions of Windows Installer - Unicode?

Why are multiple of the same versions listed?

What modules are loaded?

A module is a dynamic link library (DLL) or an executable file that is loaded into the process. Below is a list of non-system modules that are loaded by Windows Installer - Unicode.

What else is related?

Windows Installer - Unicode Stability

msiexec.exe crashes or has encountered a critical error 0.8900% of the time.
Error: Sluttet virke (WindowsInstallerCustomActions)
Occurred: over 6 months ago
Error: Stopped working (WindowsInstallerCustomActions)
Occurred: over 6 months ago
Error: Stopped working (BEX)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Windows 8 (6.2.9200.0)
Windows 8 Enterprise (6.2.9200.0)
Windows 8 Enterprise Evaluation (6.2.9200.0)
Windows 8 Pro (6.2.9200.0)
Windows 8 Pro N (6.2.9200.0)
Windows 8 Pro with Media Center (6.2.9200.0)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: msiexec.exe
Publisher: Microsoft Corporation (verified)
Name: Windows Installer - Unicode
Description: Windows® installer
Version: 5.0.9200.16384 (win8_rtm.120725-1247)
Product version: 5.0.9200.16384
Size: 61.5 KB
Original file name: msiexec.exe.mui
Windows file protection: Yes

Resource utilization

CPU utilization averages
Total CPU: 0.6005880714%
Privileged CPU: 0.3215501763%
User CPU: 0.27903789516880%
Privileged CPU time: 3706.25 ms
Privileged CPU time /min: 2 ms
CPU cycle count: 667,067,047
CPU cycle count /min: 34,768,955
Context switches /sec: 149
Memory utilization averages
Committed memory: 137.64 MB
Peak committed memory: 144.79 MB
Paged memory: 27.92 MB
Peak paged memory: 42.91 MB
Paged system memory: 167.35 KB
Non-paged system memory: 16.4 KB
Working set memory: 12.38 MB
Peak working set memory: 38.33 MB
Min working set memory: 10.73 MB
Private memory: 27.92 MB
Page faults: 113,831
Page faults /min: 69
Process I/O averages
Total read operations: 2,857
Read operations /min: 1
Total read transfer: 18.59 MB
Read transfer /min: 6.16 KB
Total write operations: 3,827
Write operations /min: 2
Total write transfer: 154.37 MB
Write transfer /min: 63.62 KB
Total other operations: 134,291
Other operations /min: 72
Total other transfer: 3.05 MB
Other Transfer /min: 2.69 KB
Handle count average: 525
Thread count average: 18
Thread resource averages

Process details

Runs as (owner): System
Integrety level: System
Windows platform: 32-bit
Runs as a service: Yes
Parent Processes
Child Process
Process Commands
C:\Windows\system32\msiexec.exe /V
C:\WINDOWS\system32\msiexec.exe /V

Service details

Name: Windows Installer -ohjelma
Service name: msiserver
Service type: Win32OwnProcess
Description: “Lisää, muokkaa tai poistaa Windows Installer- tai APPX-pakettina (*.msi, *.msp ja *.appx) tarjottuja sovelluksia. Jos tämä palvelu poistetaan käytöstä, siitä suoraan riippuvaiset palvelut eivät käynnisty.”

Scheduled task details

CLSID: {AF8E4C1B-E35B-4C57-9A64-1CB2C21CFA46}
Command: \{AF8E4C1B-E35B-4C57-9A64-1CB2C21CFA46}

Internet Explorer BHO details

CLSID: {127AD70F-B2B7-4f6a-ACD9-C7B1FE48C8C0}

Image hashes

MD5: 07eab0a1dcf20b91a30eb6822d63483c
SHA-1: bbd9e24249889f74aec9132593dc3c6fa8dcb71e
SHA-256: 642533166530468ba9a5848d97960001416990317e2385f278ea3deb2ea32450

PE image details

Subsystem: Windows GUI
Langauge*: Microsoft Visual C++
File entropy: 5.75360
File packed: No
Import Table
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