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Is wuauclt.exe safe?

Wuauclt.exe is a executable file (a program) within Windows. The filename extension .exe denotes an executable file. You should only run executable files from publishers you trust, because executable files can potentially change your computer settings or harm your computer. The free file information forum can help you determine if wuauclt.exe is a virus, trojan, spyware, or adware that you can remove, or a file belonging to a Windows system or to an application you can trust.


Wuauclt.exe file information

The process known as Automatic Updates or Windows Update Automatic Updates or Windows Update or Windows Update AutoUpdate Client or Automatische Updates or Actualizaciones automáticas

belongs to software Microsoft Windows Operating System or Betriebssystem Microsoft Windows or Windows Update or Sistema operativo Microsoft Windows

by Microsoft (www.microsoft.com) or Microsoft Windows XP Publisher or Microsoft Windows Component Publisher (www.microsoft.com).

Description: The original wuauclt.exe from Microsoft is an important part of Windows, but often causes problems. The file wuauclt.exe is located in the folder C:\Windows\System32. Known file sizes on Windows 7/XP are 124,184 bytes (28% of all occurrences), 53,080 bytes and 66 more variants. http://www.file.net/process/wuauclt.exe.html 
The file has a digital signature. It is a trustworthy file from Microsoft. The program has no visible window. Therefore the technical security rating is 9% dangerous; however you should also read the users reviews.

Recommended: Identify wuauclt.exe related errors

Viruses with the same file name

Is wuauclt.exe a virus? No, it is not. The true wuauclt.exe file is a safe Microsoft Windows system process, called "Automatic Updates". However, writers of malware programs, such as viruses, worms, and trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are for example W32/Suspicious_N.gen (detected by F-Secure), and Win32:Pakes-OD (detected by Avast).
To ensure that no rogue wuauclt.exe is running on your PC, click here to run a Free Malware Scan.

How to recognize suspicious variants? If wuauclt.exe is located in the folder C:\Windows, the security rating is 70% dangerous. The file size is 230,518 bytes (40% of all occurrences), 230,520 bytes and 5 more variants. Wuauclt.exe is not a Windows system file. The process is loaded during the Windows boot process (see Registry key: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices, HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders). The application has no file description. Wuauclt.exe is an unknown file in the Windows folder. The process uses ports to connect to a LAN or the Internet. The program is not visible. Wuauclt.exe is able to hide itself and monitor applications.

If wuauclt.exe is located in a subfolder of C:\Windows, the security rating is 85% dangerous. The file size is 5,632 bytes (30% of all occurrences), 21,873 bytes and 4 more variants. There is no description of the program. Wuauclt.exe is an unknown file in the Windows folder. The program is not visible. It is not a Windows system file. The application listens for or sends data on open ports to a LAN or the Internet. Wuauclt.exe is able to monitor applications, record inputs and manipulate other programs.

If wuauclt.exe is located in a subfolder of "C:\Documents and Settings", the security rating is 73% dangerous. The file size is 33,068 bytes (50% of all occurrences), 77,824 bytes or 71,168 bytes.

If wuauclt.exe is located in the folder C:\Windows\System32\drivers, the security rating is 56% dangerous. The file size is 81,794 bytes.

If wuauclt.exe is located in a subfolder of C:\Windows\System32, the security rating is 86% dangerous. The file size is 26,967 bytes.

Important: Some malware disguises itself as wuauclt.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the wuauclt.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.



Score

User Comments

The latest version I have on XPP is 7.5.7600.256 from 2012.06.02 at 15:19:34 and a file size of 53,784 bytes. This file is in windows\system32\dllcache, windows\system32 and windows\LastGood\system32 There are older versions around which stem from an auto repair process, which were erroneously retrieved from Windows\ServicePackFiles\i386 (MS-Bug)
  Hardy Hoffmann  
Anyone who says this is dangerous doesn't know what they are talking about. It is the client process for the Windows Update service, which installs security patches, hotfixes, and other various updates for your Windows system to keep it secure from virus attacks.
  Spencer  
I got 50% CPU from svchost.exe -k -netsvcs and I fixed it by disabling Windows Update.
  Chuckymore  
Whenever I first start up my computer, a windows xp, it is in the task manager under SYSTEM. Then a few seconds later another wuauclt comes up under my username. Once and a while my computer takes on some serious lag caused by the wuauclt under SYSTEM spiking to 135,000 K of memory usage. When I end the process it stops and sometimes restarts with lower mem usage. When I end the wuauclt under my user name the little yellow windows defender icon disappears.
  HTML5-JS-CSS-Dev  
Automatic updates. Safe and important, because it updates your system and programs. It's sometimes annoying because it consumes much RAM at times.
  LG  
I dislable Windows Updates Service but this wuaucit.exe is runing.It's a virus!I shearch it but nothing.It's a hidden file.Destroy it!!
  NicN5ering  
1. To turn it off, click Start/Run and type services.msc. Look for the service that says "Automatic Updates" and double click it. Press "Stop" to stop the service To prevent it from running on reboot, change startup type to "disabled" Press Ok.
  some tech   (further information)
I found it with procexp.exe tool, it was keeping my flash drives autorun.inf locked while moving files around my flash drive.. I removed it and puf! No more problems. P.S.: also found a wuauclt1.exe with a Windows Update icon(i believe it's the original file). The virus didn't have an icon!!
  Radu  
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of wuauclt.exe: based on 432 votes with 9 reviews.
157 users think wuauclt.exe is essential for Windows or an installed application. 31 users think it's probably harmless. 87 users think it's neither essential nor dangerous. 62 users suspect danger. 95 users think wuauclt.exe is dangerous and recommend removing it. 55 users don't grade wuauclt.exe ("not sure about it").


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Wuauclt scanner


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