What is ashServ.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 ashServ.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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AshServ.exe file information

Windows Task Manager with ashServ
AshServ.exe process in Windows Task Manager

The process known as avast! antivirus service belongs to software avast! Antivirus by ALWIL Software ( or Microsoft Corporation™ (

Description: AshServ.exe is not essential for the Windows OS and causes relatively few problems. The file ashServ.exe is located in a subfolder of "C:\Program Files" (e.g. C:\Program Files\alwil software\avast4\). Known file sizes on Windows 10/8/7/XP are 138,680 bytes (46% of all occurrences), 144,760 bytes and 6 more variants. 
The program is not visible. It is not a Windows core file. The application can be removed using the Control Panel's Add\Remove programs applet. The file is a Verisign signed file. AshServ.exe is certified by a trustworthy company. AshServ.exe is able to monitor applications. Therefore the technical security rating is 15% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to remove the entire program avast! Antivirus using Windows Control Panel.

Recommended: Identify ashServ.exe related errors

If ashServ.exe is located in the C:\Windows\System32 folder, the security rating is 64% dangerous. The file size is 2,225,664 bytes. There is no information about the author of the file. AshServ.exe is an unknown file in the Windows folder. The program has no visible window. The program starts when Windows starts (see Registry key: MACHINE\RunServices, MACHINE\RunOnce). The ashServ.exe file is not a Windows system file. AshServ.exe is able to connect to the Internet and record keyboard and mouse inputs.

External information from Paul Collins:

Important: Some malware camouflages itself as ashServ.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Bloodhound.Bancos.1 (detected by Symantec), and TSPY_BANCOS.ECI (detected by TrendMicro). Therefore, you should check the ashServ.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

avast! antivirus program.
It's a virus-scanner
Part of Avast! anti-virus software. USES YOUR DAO files and may need to be ended to load software that requires access to DAO files!
  Jeff [KORB]  
avast Antivr 4
Avast related
Avast antivirus scanner service
  Christoph Sieber  
Avast! AntiVirus
  XerraX   (further information)
Is Part of Avast! anti-virus software. That Runs In The Background Watching For System Attacks. It's Harmless and Very Helpful In The Lo9ng Run.
  Dan Strother   (further information)
It looks like someone resource hacked another anti virus software to make it seem that another anti virus obtained Alwil's intellectual property there for stating the fact that any one of the anti virus applications had that file incorporated with it besides Alwil seems too far fetched and the file posted as a prank.
I know that Aedan Antivirus doesn't have that file inside, furthermore ashServ.exe is a component of avast as well as Nod32. However Nod32 does not own the rights to the intellectual property thus causes a concern. I have installed all 3 anti virus systems and I have only found a relevant similarity in avast with Nod32 as a system file for registering the services of each engine in avast and not at all have found the file ashServ.exe labeled in either or.
ashserv.exe is part of the Avast Anti-virus Suite. This process is the main executable for this piece of software, and is important for the stable and secure running of your computer and should not be terminated.
Ashserv is a core component of the Avast! antiviru program. It unfortunately has a flaw which results in 100% CPU utilization at seemingly random points. It is not necessary to remove it, simply ending the process will suffice. An annoyance at worst
  Mathew Harradine  
Part of avast! antivirus
  Justin Bellinger   (further information)
ASHSERV.EXE caused system instability several times on my PC by using 100% of the CPU and increasing memory usage gradually.I tryed to end the process but the access was denied-so I had to restart or even reset my PC
Belongs to Alwil's Avast Anti-Virus. Do not stop the process or you will be vulnerable to attack. It is true that It has a bug in that it can cause cpu to go and hover around %100, but it does not happen all that often - once to me in two years.
  Dennis Perreault - just a user.  
uninstalled Avast! free home edition and cant get ashserv.exe to end in task manager as access is denied. tried to run the aswclear.exe Avast uninstall program and it can't be run as the avast self protection mode is still in operation even though I uninstalled the program itself; files are left behind.

Rating chart

Summary: Average user rating of ashServ.exe: based on 39 votes with 18 user comments. 26 users think ashServ.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 4 users think it's neither essential nor dangerous. One user suspects danger. 5 users think ashServ.exe is dangerous and recommend removing it. 2 users don't grade ashServ.exe ("not sure about it").

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Best practices for resolving ashServ issues

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

ashServ.exe [all]