How to remove an shellext error

The free file information forum can help you determine if shellext.dll is a virus, trojan, spyware, or adware that you can remove, or a file belonging to a Windows system or an application you can trust.

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Shellext.dll file information

The process known as Advanced System Optimizer or TextPad shell extension DLL or Shell Extension or Microsoft Security Client Shell Extension or Shell Extention or ShellExt Module or WinAntiSpyware (version 2006 Shell Extension) or Power MP3 WMA Converter Shell Extension or WinAntiSpyware Shell Extension or Microsoft Security Essentials Shell Extension

belongs to software Advanced System Optimizer (version 2) or TextPad Add-On or Microsoft Security Client or Ad-Aware or WinAntiSpyware (version 2007, 2006 Free) or ESET Smart Security or ESET NOD32 Antivirus or Power MP3 WMA Converter (version 2010,, 2006,, 2005,) or Microsoft Security Essentials or Shell Extension

by Systweak (www.systweak.com) or Helios Software Solutions (www.textpad.com) or Microsoft (www.microsoft.com) or Lavasoft AB (www.lavasoft.com) or ESET (www.eset.com) or Systems, Software, Technology or WinSoftware Corporation or CooolSoft or WinSoftware.

Description: The file shellext.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 7/XP are 86,016 bytes (18% of all occurrences), 191,488 bytes and 54 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 is not visible. Shellext.dll is not a Windows system file. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. shellext.dll is able to record inputs. Therefore the technical security rating is 57% dangerous, however also read the users reviews.
In case of any problems with shellext.dll, you may want to uninstall the associated program (Start > Control Panel > Add/Remove programs > TextPad or AntiVirenKit InternetSecurity).

Recommended: Identify shellext.dll related errors

If shellext.dll is located in a subfolder of C:\, the security rating is 72% dangerous. The file size is 86,016 bytes. Program has no file description. It can change the behavior of other programs or manipulate other programs. The program is not visible. There is no detailed description of this service. File shellext.dll is not a Windows system file.
In case of any problems with shellext.dll, you may want to uninstall the associated program (Start > Control Panel > Add/Remove programs > AntiVirenKit 2005).

If shellext.dll is located in the folder C:\Windows, the security rating is 82% dangerous. The file size is 184,832 bytes. There is no description of the program. It can change the behavior of other programs or manipulate other programs. The program is not visible. The service has no detailed description. Shellext.dll is not a Windows core file.

Important: Some malware camouflages itself as shellext.dll, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the shellext.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.

Score

User Comments

Textpad Shell Extension
SSigurdarson (further information)

Text editor.
Ben! (further information)

system optimiser - still present even after software uninstallation

Textpad Shell Extension
Eran

hidden in common files aol. Startup entry says 6 months of aol included although this is a browser helper object.
Jacob Steelsmith

This file is installed as part of a program called "Advanced System Optimizer" it appears to be for adding the programs commands to the os context menus. Annoying to get rid of. Boot into safe mode and delete this file after you have uninstalled the software.
Manchine (further information)

included with BitBeamer FTP software (now discontinued)
Dan

its easy to remove just make a bat file that remove's the file and let it start when windows starts
the swan

Installs with Advanced System Optimizer and remains after uninstall
Wenex8

Inculded in NOD32 v3.1. It's not dangerous.
Dattebayo

I unistalled advanced system pro and am left with it sittinas shelltxt.dll and I went to safe mode as administrater and I still can;t delete it in my programs
Ruth Bradshaw

Installed with Stardock Object Desktop

Summary: Average user rating of shellext.dll: based on 21 votes with 12 reviews.

13 users think shellext.dll is essential for Windows or an installed application. 6 users think it's neither essential nor dangerous. 2 users suspect danger. 2 users doesn't grade shellext.dll ("not sure about it").

Shellext scanner

Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan.

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