What is ashWebSv.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 ashWebSv.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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AshWebSv.exe file information

Windows Task Manager with ashWebSv
AshWebSv.exe process in Windows Task Manager

The process known as avast! Web Scanner belongs to software avast! Antivirus by ALWIL Software (

Description: AshWebSv.exe is not essential for the Windows OS and causes relatively few problems. The ashWebSv.exe file 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 352,920 bytes (53% of all occurrences), 345,464 bytes and 4 more variants. 
The program is not visible. AshWebSv.exe is not a Windows system file. The software listens for or sends data on open ports to a LAN or the Internet. It is a Verisign signed file. The file is digitally signed. AshWebSv.exe is able to hide itself. Therefore the technical security rating is 38% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with ashWebSv.exe, you may want to do the following:
  1) uninstall the associated program (Start > Control Panel > Uninstall a Program > avast! Antivirus)
  2) go to the support area of the Avast website
  3) update the program to the latest version.

Recommended: Identify ashWebSv.exe related errors

If ashWebSv.exe is located in a subfolder of C:\, the security rating is 30% dangerous. The file size is 352,920 bytes (50% of all occurrences), 348,344 bytes or 349,560 bytes. The program has no visible window. The ashWebSv.exe file is a Verisign signed file. It is certified by a trustworthy company. The process uses ports to connect to or from a LAN or the Internet. AshWebSv.exe is not a Windows core file. AshWebSv.exe is able to hide itself.

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

hmmm.. I've been using avast for over a year. This is the first time I've noticed a serious lag. Memory nearly all used up.using 102,984k at present.other aspects of ash in task manager are using 3-4,000 k.No wonder I couldn't copy my photo's.
It is the avast! anitvirus updater and service host connector. The program isn't dangerous, but it can take up more memory than needed. Go into avast! settings to see if you're running somethin unnecessary.
  Michael K.   (further information)
It's an antivirus. Probably the best free Antivirus around.
That process could eat till 90mb of mem I would very annoyong
Avast is great for something free, though I've had it cause issues with two of my games locking up the system while it's running. I had to turn off the self-defense feature in the tray options so I can kill the related processes while playing, just stopping the on-access protection is not enough. There are 5 separate processes services so getting all of them up and going again is a pain. If there is a way to reload it all without a restart, maybe a way to make some kind of batch file.
This is a part of anti-virus Avast's web-shield and defending the computer against threats from the world wide web. It should not be closed!!!
  Paradox   (further information)
Avast Antivirus -- but uses a lot of memory!
it's an avast antivirus web scanner. it checks every website you visit for any harmful or malicious codes before totally displaying it.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of ashWebSv.exe: based on 82 votes with 9 reviews. 70 users think ashWebSv.exe is essential for Windows or an installed application. 6 users think it's probably harmless. 4 users think it's neither essential nor dangerous. One user suspects danger. One user thinks ashWebSv.exe is dangerous and recommends removing it. 6 users don't grade ashWebSv.exe ("not sure about it").

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Best practices for resolving ashWebSv issues

A clean and tidy computer is the key requirement for avoiding problems with ashWebSv. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ashWebSv.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ashWebSv.exe [all]