What is WebCompanion.exe?

The genuine WebCompanion.exe file is a software component of Web Companion by Lavasoft.
Web Companion by Lavasoft began replacing their Ad-Aware Security Toolbar in September 2014. It is a free application providing real-time cloud-based screening of URL's entered in a user's browser. It interacts with the Internet Protocol (IP) stack at the TCP (Transmission Control Protocol) level to detect newly-entered URL's and consult cloud-based Malicious URL (MURL) data and logic from Lavasoft, Avira, Malware Domains, and other security providers to warn the user of unsafe websites in real time. Lavasoft pioneered anti-spyware commercial applications in 1999 when "spyware" was a new term and they continue to lead the field, committed to make millions of users' PC's and the Internet safer through their free anti-malware program and partnering with other security providers to keep up with over half a million new threats and variants created daily.

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the WebCompanion.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for WebCompanion.exe related errors

WebCompanion.exe file information

The process known as Web Companion belongs to software Web Companion or Ad-Aware Web Companion by Lavasoft (

Description: WebCompanion.exe is not essential for Windows and will often cause problems. WebCompanion.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,732,368 bytes (13% of all occurrences), 1,381,648 bytes and 23 more variants. 
The program has a visible window. It is not a Windows core file. The software is loaded during the Windows boot process (see Registry key: Run, DEFAULT\Run). WebCompanion.exe is a Verisign signed file. Therefore the technical security rating is 23% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case you experience problems using WebCompanion.exe, you can also completely remove Web Companion or Ad-Aware Web Companion (Control Panel ⇒ Uninstall a Program) or turn to the software company, Lavasoft, for advice.

Recommended: Identify WebCompanion.exe related errors

Important: Some malware camouflages itself as WebCompanion.exe. Therefore, you should check the WebCompanion.exe 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

"NICHTS" wurde ohne meines Wissens Installiert. und was ich nicht kenne sowie den Zweck den es erfüllen soll wird gelöscht.
dat isn trojaner -.- lavasoft
Sony Vaio with W7pro resource monitor shows 48% cpu usage 30 minutes after boot up. Uninstalling is recommended.
  irv post  
Dieses nette kleine Proggi verhindert zuverlässig die Ausführung von Adobe Photoshop Elements und Adobe Premiere Elements. Das Proggi ließ sich erst deinstallieren, nach dem die Datei "LavasoftTcpService64.dll" unter Windows/Sytem32, händisch in "-LavasoftTcpService64.dll" umbenannt war! Danach deinstalliert und siehe da die beiden genannten Programme von Adobe laufen wieder.

Summary: Average user rating of WebCompanion.exe: based on 5 votes with 4 user comments. 2 users think it's neither essential nor dangerous. 2 users suspect danger. One user thinks WebCompanion.exe is dangerous and recommends removing it.

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Best practices for resolving WebCompanion issues

A clean and tidy computer is the key requirement for avoiding problems with WebCompanion. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the WebCompanion.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

WebCompanion.exe [all]