What is ShellExtension.dll?

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

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ShellExtension.dll file information

The process known as Microsoft AntiSpyware Shell Extension or Touro Cloud Backup or Microsoft Image Composite Editor Shell Extension

belongs to software Microsoft Windows AntiSpyware or Microsoft AntiSpyware (Beta (version 1)) or Microsoft Image Composite Editor or LeechGet (version 2006) or Microsoft AntiSpyware

by Microsoft ( or HGST.

Description: ShellExtension.dll is not essential for the Windows OS and causes relatively few problems. ShellExtension.dll is located in a subfolder of "C:\Program Files"—usually C:\Program Files\Microsoft AntiSpyware\. Known file sizes on Windows 10/8/7/XP are 147,456 bytes (35% of all occurrences), 101,080 bytes and 10 more variants. 
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 has no visible window. ShellExtension.dll is not a Windows system file. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. There is no description of the program. ShellExtension.dll is able to monitor applications. Therefore the technical security rating is 63% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with Microsoft AntiSpyware or Steganos Safe OEM come up, you could also do the following:
  1) uninstall the program using the Control Panel ⇒ Uninstall a Program
  2) search the support area on the Microsoft website.

Recommended: Identify ShellExtension.dll related errors

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

It is part of Microsoft Antispyware program not dangerous
  David   (further information)
microsoft anti spyware beta, good product
It is part of Microsoft Antispyware program not dangerous
great program for removing viruses and spyware, and preventing some unwanted startup programs
It's located in the folder "Microsoft AntiSpyware" (system disk, "Program Files").
Microsoft Antispyware - windows explorer right click menu extension
  Kender   (further information)

Rating chart

Summary: Average user rating of ShellExtension.dll: based on 10 votes with 6 user comments. 9 users think ShellExtension.dll is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving ShellExtension issues

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

ShellExtension.dll [all]