What is avshlext.dll?

Avshlext.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if avshlext.dll is a Windows system file or if it belongs to an application that you can trust.

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Avshlext.dll file information

The process known as CA Antivirus Shell Extension Handler or Avshlext belongs to software Computer Associates Antivirus or CA Anti-Virus or CA Internet Security Suite or H+BEDV Datentechnik GmbH Avshlext or CA Personal Firewall by Computer Associates International ( or CA ( or H+BEDV Datentechnik GmbH (

Description: Avshlext.dll is not essential for the Windows OS and causes relatively few problems. Avshlext.dll is located in the C:\Windows folder—mostly C:\Windows\ or C:\Program Files\AVPersonal\. Known file sizes on Windows 10/8/7/XP are 111,728 bytes (55% of all occurrences), 36,864 bytes, 112,144 bytes, 112,168 bytes or 42,096 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program is not visible. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. It is not a Windows system file. It is a Verisign signed file. The file is digitally signed. Therefore the technical security rating is 58% dangerous; however you should also read the user reviews.

Recommended: Identify avshlext.dll related errors

If avshlext.dll is located in a subfolder of "C:\Program Files", the security rating is 49% dangerous. The file size is 95,760 bytes (30% of all occurrences), 95,496 bytes, 40,960 bytes, 91,664 bytes or 57,344 bytes. The program is not visible. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The avshlext.dll file is not a Windows system file. There is no information about the author of the file. Avshlext.dll is a Verisign signed file. The file has a digital signature.

Uninstalling this variant: If you have any problems with avshlext.dll, you may want to remove the entire program CA Anti-Virus or AntiVir/XP using Windows Control Panel.

Important: Some malware disguises itself as avshlext.dll, particularly when not located in the C:\Windows folder. Therefore, you should check the avshlext.dll 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

Vary hard to remove. Runs in back ground
  Herman Barton  
CA antivirus something slow performance runs in windows\avshlext.dll part of isafe.exe and ca services

Rating chart

Summary: Average user rating of avshlext.dll: based on 14 votes with 4 user comments. 8 users think avshlext.dll is essential for Windows or an installed application. 3 users think it's probably harmless. One user thinks it's neither essential nor dangerous. 2 users think avshlext.dll is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving avshlext issues

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

avshlext.dll [all]