What is ExpShell.dll?

ExpShell.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 ExpShell.dll is a Windows system file or if it belongs to an application that you can trust.

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ExpShell.dll file information

The process known as ClamWin Free Antivirus or ClamWin Antivirus belongs to software ClamWin Free Antivirus or ClamWin Antivirus by alch (

Description: ExpShell.dll is not essential for the Windows OS and causes relatively few problems. The file ExpShell.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 81,920 bytes (90% of all occurrences) or 57,344 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. The application can be uninstalled in the Control Panel. Therefore the technical security rating is 61% dangerous; however you should also read the user reviews.

Uninstalling this variant: The software publisher Clamwin provides update information ( You could uninstall ClamWin Free Antivirus or ClamWin Antivirus software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify ExpShell.dll related errors

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

This is a free anti-virus program. It has never giving me trouble.
  Thunder   (further information)

Summary: Average user rating of ExpShell.dll: based on 3 votes with 1 user comment. 2 users think ExpShell.dll is essential for Windows or an installed application. One user thinks it's probably harmless.

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Best practices for resolving ExpShell issues

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

ExpShell.dll [all]