What is wuaclt.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the wuaclt.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Wuaclt.exe file information

The process known as Realtek Azalia Audio - Event Monitor belongs to software Realtek (version AC97 Audio - Event Monitor) by Realtek Semiconductor (

Description: Wuaclt.exe is not essential for Windows and will often cause problems. The wuaclt.exe file is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 200,706 bytes. 
The program is not visible. It is located in the Windows folder, but it is not a Windows core file. The software starts upon Windows startup (see Registry key: MACHINE\Run, win.ini, Winlogon\Shell). The wuaclt.exe file is not a Windows system file. Wuaclt.exe is able to monitor applications and manipulate other programs. Therefore the technical security rating is 60% dangerous, however you should also read the user reviews.

Recommended: Identify wuaclt.exe related errors

If wuaclt.exe is located in a subfolder of the user's profile folder, the security rating is 64% dangerous. The file size is 2,330,624 bytes. It is a file with no information about its developer. The program is not visible. The program starts when Windows starts (see Registry key: MACHINE\Run, win.ini, Winlogon\Shell). Wuaclt.exe is not a Windows core file.

Important: Some malware camouflages itself as wuaclt.exe, for example Trojan:Win32/VBInject.B (detected by Microsoft), and Trojan.Win32.VB.yvv (detected by Kaspersky). Therefore, you should check the wuaclt.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.


User Comments

wuaclt.exe is considered to be a security risk, not only because antivirus programs flag Cult Trojan as a trojan, but also because other sites consider it a Trojan as well
wuaclt.exe is a service provided by Microsoft that provides updates for the Microsoft Windows operating system and its installed components, including Internet Explorer.
  Mike   (further information)

Summary: Average user rating of wuaclt.exe: based on 2 votes with 2 user comments. One user thinks wuaclt.exe is essential for Windows or an installed application. One user suspects danger.

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Best practices for resolving wuaclt issues

A clean and tidy computer is the key requirement for avoiding problems with wuaclt. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the wuaclt.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

wuaclt.exe [all]