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What is wuauclt.exe?

Part of Windows Update by Microsoft

What is it?

Windows Update is a service provided by Microsoft that provides updates for the Microsoft Windows operating system and its installed components, including Internet Explorer. Windows Update can be configured to install critical updates automatically so long as the computer is connected to the Internet, without the user needing to install them manually, or even be aware that an update is required.
Description of wuauclt.exe from Microsoft
When you turn on automatic updating, most updates will download and install without you having to lift a finger. But sometimes Windows Update will need your input during an installation. In this case, you'll see an alert in the notification area at the far right of the taskbar—be sure to click it. If you don't respond to a Windows Update alert, your PC might end up missing an important download.
(wuauclt.exe is a system file that is installed with Windows)
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How does wuauclt.exe run?

Process - wuauclt.exe is an instance of a running program. This 32-bit program executes with the privileges as the currently logged in user account. wuauclt.exe is executed by the process svchost.exe (Generic Host Process for Win32 Services by Microsoft).


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the wuauclt.exe process running.Of the 0.2% of wuauclt.exe users, less than 1% have disabled it.
How resource intensive is wuauclt.exe?
Comparison based on the average resource utilization across all programs.
0.00855% CPU85472.6%
Average CPU utilization across all programs is 0.00001%.
          3.11 MB RAM14.4%
Average private memory utilization across all programs is 21.53 MB.
     64 /min2.8%
Average I/O read and write operations for all programs is 2,253 per minute.
         13 GDI objects8.7%
Average number of GUI GDI and USER objects for all programs is 150.
          13 context switches/sec13.0%
Average context switches for all programs is 100 per second.
Typical file (disk image) location:

Are there other versions of Windows Update?

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 Update.

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.131072)
Windows XP Home Edition (5.1.2600.131072)
Microsoft Windows XP (5.1.2600.196608)
Windows XP Home Edition (5.1.2600.196608)
Windows XP Professional (5.1.2600.196608)
Windows Server 2003, Standard Edition (5.2.3790.131072)
Windows Vista (TM) Home Premium (6.0.6000.0)
Windows Vista (TM) Home Basic (6.0.6001.65536)
Windows Vista (TM) Home Premium (6.0.6001.65536)
Windows Vista (TM) Ultimate (6.0.6001.65536)
Windows Vista (TM) Home Basic (6.0.6002.131072)
Windows Vista (TM) Home Premium (6.0.6002.131072)

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: wuauclt.exe
Publisher: Microsoft Corporation (verified)
Name: Windows Update
Description: Microsoft® Windows® Operating System
Version: 7.4.7600.226 (winmain_wtr_wsus3sp2(wmbla).090806-1834)
Product version: 7.4.7600.226
Size: 52.22 KB
Original file name: wuauclt.exe
Windows file protection: Yes

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 4/11/2009
Expiration date: 4/26/2010

Resource utilization

CPU utilization averages
Total CPU: 0.0211099868%
Privileged CPU: 0.0125627267%
User CPU: 0.00854726009162%
Total CPU time: 17 ms
Total CPU time /min: 1 ms
Privileged CPU time: 26092.28 ms
Privileged CPU time /min: 10 ms
User CPU time: 4.17 ms
User CPU time /min: 0 ms
CPU cycle count: 222,849,785
CPU cycle count /min: 65,311,484
Context switches /sec: 13
Memory utilization averages
Committed memory: 53.45 MB
Peak committed memory: 57.96 MB
Paged memory: 3.11 MB
Peak paged memory: 3.14 MB
Paged system memory: 94.98 KB
Non-paged system memory: 4.21 KB
Working set memory: 4.1 MB
Peak working set memory: 5.78 MB
Min working set memory: 4.06 MB
Private memory: 3.11 MB
Page faults: 2,264
Page faults /min: 209
Process I/O averages
Total read operations: 164
Read operations /min: 61
Total read transfer: 858.03 KB
Read transfer /min: 296.38 KB
Total write operations: 13
Write operations /min: 3
Total write transfer: 17.84 KB
Write transfer /min: 7.96 KB
Total other operations: 1,037
Other operations /min: 143
Total other transfer: 37.17 KB
Other Transfer /min: 5.95 KB
GUI Object Averages
GDI objects: 13
USER objects: 7
Handle count average: 114
Thread count average: 4
Thread resource averages

Process details

Runs as (owner): User
Integrety level: Medium
Windows platform: 32-bit
System Tray: Yes
Parent Processes
Process Commands
"C:\WINDOWS\system32\wuauclt.exe" /RunStoreAsComServer Local\[43c]SUSDS1c3a0f2b49f90d4a8b1f6181afb58e7f
"C:\WINDOWS\system32\wuauclt.exe" /RunStoreAsComServer Local\[5ac]SUSDS5dc4d2066f69e3429c0a6452299bb559
"C:\WINDOWS\system32\wuauclt.exe" /RunStoreAsComServer Local\[428]SUSDS1a01d9538738d14ea1cf7e17aad98ac3

Image hashes

MD5: 62bb79160f86cd962f312c68c6239bfd
SHA-1: c2de8148e1a8e8f097e3a40232ddb04efd0a7cc6
SHA-256: 2fa2506b5c8b4469d2b36c803cceac15e831c3f8a4af065aca72da8f385f24c0

PE image details

Subsystem: Windows GUI
Langauge*: Microsoft Visual C++
File entropy: 6.10284
File packed: No
Import Table
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