What is aswUpdSv.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 aswUpdSv.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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AswUpdSv.exe file information

Windows Task Manager with aswUpdSv
AswUpdSv.exe process in Windows Task Manager

The process known as avast! Antivirus updating service belongs to software avast! Antivirus or avast! iAVS4 Control Service by ALWIL Software (

Description: AswUpdSv.exe is not essential for the Windows OS and causes relatively few problems. AswUpdSv.exe is located in a subfolder of "C:\Program Files"—normally C:\Program Files\Alwil Software\Avast4\. Known file sizes on Windows 10/8/7/XP are 18,752 bytes (50% of all occurrences), 17,272 bytes, 16,056 bytes, 53,248 bytes or 16,248 bytes. 
The program is not visible. AswUpdSv.exe is not a Windows system file. You can uninstall this program in the Control Panel. The file is a Verisign signed file. AswUpdSv.exe is digitally signed. Therefore the technical security rating is 16% dangerous, however you should also read the user reviews.

Uninstalling this variant: You could also visit the support page, update the program or remove the entire program avast! Antivirus using Windows Control Panel.

Recommended: Identify aswUpdSv.exe related errors

Important: Some malware camouflages itself as aswUpdSv.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the aswUpdSv.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

try uninstalling it..check your registry, its still there on Local Machine Software and cannot be deleted easily,
  g me  
Avast sub file, help update virus definitions! DON'T SHUT DOWN!
Avast! file; one of several hard-coded to auto-startup.
Do yourself a big favor and DONT touch this file
  John Grissem  
This file is not dangerous at all. part of avast antivirus download package
Avast antivirus updater, Harmless
Avast part
appeared after installing avast
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of aswUpdSv.exe: based on 28 votes with 9 reviews. 23 users think aswUpdSv.exe is essential for Windows or an installed application. One user suspects danger. 4 users think aswUpdSv.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving aswUpdSv issues

A clean and tidy computer is the key requirement for avoiding problems with aswUpdSv. 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 aswUpdSv.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

aswUpdSv.exe [all]