Web Companion Web Companion

How to uninstall Web Companion from your system

Web Companion is a Windows application. Read below about how to uninstall it from your PC. It was created for Windows by Lavasoft. More data about Lavasoft can be seen here. More details about Web Companion can be seen at . Web Companion is commonly installed in the C:\Program Files (x86)\Lavasoft\Web Companion\Application folder, however this location may vary a lot depending on the user's choice when installing the application. Web Companion's entire uninstall command line is C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe --uninstall. WebCompanion.exe is the Web Companion's main executable file and it takes approximately 7.54 MB (7908440 bytes) on disk.

The following executables are contained in Web Companion. They occupy 8.13 MB (8524304 bytes) on disk.

  • Ad-Aware Web Companion.exe (129.09 KB)
  • Lavasoft.WCAssistant.WinService.exe (28.09 KB)
  • WcCommunication.exe (28.59 KB)
  • WebCompanion.exe (7.54 MB)
  • WebCompanion.Loader.exe (20.59 KB)
  • WebCompanionInstaller.exe (395.09 KB) to view all...

The current web page applies to Web Companion version 4.9.2146.4004 alone. You can find below info on other releases of Web Companion: to view all...
When planning to uninstall Web Companion you should check if the following data is left behind on your PC.

Folders left behind when you uninstall Web Companion:
  • C:\Program Files (x86)\Lavasoft\Web Companion
  • C:\Users\UserName\AppData\Roaming\Lavasoft\Web Companion

The files below are left behind on your disk when you remove Web Companion:
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\BCUEngineS.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\BCUSDK.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\de-DE\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\de-DE\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\DotNetZip.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\en-US\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\en-US\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Esent.Interop.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\es-ES\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\es-ES\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Extension\@wcextensionff.xpi
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\fr-CA\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\fr-CA\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ICSharpCode.SharpZipLib.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Interop.IWshRuntimeLibrary.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Interop.LavasoftTcpServiceLib.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Interop.SHDocVw.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Interop.Shell32.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Interop.WUApiLib.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Ionic.Zip.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\it-IT\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\it-IT\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ja-JP\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ja-JP\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.adblocker.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.AppCore.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Automation.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Compression.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.CSharp.Utilities.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Events.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Extension.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.IEController.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Omni.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Business.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.SearchProtect.Repositories.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Settings.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.SysInfo.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.Utils.SqlLite.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.Service.Logger.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WcfService.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\liblz4.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\log4net.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\LZ4.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Microsoft.mshtml.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\MozCompressor.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\Newtonsoft.Json.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\pt-BR\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\pt-BR\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ru-RU\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ru-RU\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\System.Data.SQLite.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\tr-TR\WebCompanion.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\tr-TR\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\ucrtbased.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\vcruntime140d.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WcCommunication.exe
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebcompaionReimageIcon.ico
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.exe
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.Loader.exe
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionExtensionIE.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionIcon.ico
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionIcon_Pro.ico
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe.config
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionInstaller.pdb
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\x64\SQLite.Interop.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\x86\SQLite.Interop.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\zh-CHS\WebCompanionInstaller.resources.dll
  • C:\Program Files (x86)\Lavasoft\Web Companion\Application\zh-Hans\WebCompanion.resources.dll
  • C:\Users\UserName\AppData\Roaming\Lavasoft\Web Companion\Options\Language.txt

Registry keys:
  • HKEY_CURRENT_USER\Software\Lavasoft\Web Companion
  • HKEY_LOCAL_MACHINE\Software\Lavasoft\Web Companion
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\{897f6e06-9c23-4275-946e-3de283cbaa0a}

Registry values that are not removed from your PC:
  • HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\WCAssistantService\ImagePath

How to remove Web Companion from your computer using Advanced Uninstaller PRO

Web Companion is a program released by the software company Lavasoft. Some users want to erase this application. Sometimes this is hard because uninstalling this by hand takes some knowledge regarding Windows program uninstallation. The best QUICK way to erase Web Companion is to use Advanced Uninstaller PRO. Here is how to do this:

1. If you don't have Advanced Uninstaller PRO already installed on your system, install it. This is a good step because Advanced Uninstaller PRO is a very useful uninstaller and general tool to optimize your system.


  • go to Download Link
  • download the program by pressing the DOWNLOAD button
  • set up Advanced Uninstaller PRO
2. Start Advanced Uninstaller PRO. Take some time to get familiar with Advanced Uninstaller PRO's interface and number of features available. Advanced Uninstaller PRO is a powerful package of tools.

3. Click on the General Tools button
Go to General Tools

4. Click on the Uninstall Programs feature
Go to Uninstall Programs

5. All the applications existing on the PC will appear

6. Navigate the list of applications until you locate Web Companion or simply click the Search field and type in "Web Companion". If it exists on your system the Web Companion app will be found very quickly. Notice that after you select Web Companion in the list of apps, some data regarding the application is made available to you:

  • Star rating (in the lower left corner). This tells you the opinion other people have regarding Web Companion, from "Highly recommended" to "Very dangerous".
  • Opinions by other people - Click on the Read reviews button.
  • Details regarding the program you are about to remove, by pressing the Properties button.
For instance you can see that for Web Companion:

  • The publisher is:
  • The uninstall string is: C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanionInstaller.exe --uninstall
7. Click the Uninstall button. A confirmation window will appear. accept the uninstall by clicking the Uninstall button. Advanced Uninstaller PRO will then uninstall Web Companion.
Uninstall Web Companion

8. After uninstalling Web Companion, Advanced Uninstaller PRO will ask you to run a cleanup. Click Next to go ahead with the cleanup. All the items that belong Web Companion which have been left behind will be detected and you will be asked if you want to delete them. By uninstalling Web Companion using Advanced Uninstaller PRO, you are assured that no Windows registry items, files or directories are left behind on your system.

Your Windows PC will remain clean, speedy and able to take on new tasks.


This page is not a recommendation to uninstall Web Companion by Lavasoft from your PC, nor are we saying that Web Companion by Lavasoft is not a good application for your computer. This page only contains detailed instructions on how to uninstall Web Companion in case you want to. Here you can find registry and disk entries that our application Advanced Uninstaller PRO stumbled upon and classified as "leftovers" on other users' computers.

2019-11-05 / Written by Dan Armano for Advanced Uninstaller PRO

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Last update on: 2019-11-05 18:35:24.547