What is Anonymizer.dll?

The genuine Anonymizer.dll file is a software component of Anonymizer Free Bar by Anonymizer.
Anonymizer.dll is a DLL (Dynamic Link Library) file that belongs to Anonymizer, a Virtual Private Network that hides user Internet Protocol addresses with the help of online servers. DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not an essential Windows process and can be disabled if known to create problems. Anonymizer is a security software that is designed for the Windows platform. The program works by routing all Internet traffic through encrypted data tunnels to online servers where real IP address are converted into anonymous proxy addresses. The program is advertised as a safe way to bypass government surveillance, IP Sniffing, unsecured public Wi-Fi, etc. Anonymizer was first created by Lance Cottrell in 1995. Cottrell began working on Internet anonymity tools in 1992 as a PhD. student in physics, eventually leaving to focus on his work. He is currently regarded as an expert on security, privacy, anonymity, misattribution and cryptography.

Anonymizer stands for Anonymizer Browser Helper Object Core Module

Anonymizer.dll is a browser extension for Internet Explorer. This add-on enables several additional functions for Internet Explorer. You can disable it through the Extras menu (key combination Alt + X) under Manage Add-ons. The following paragraph provides more information about Anonymizer BHO Core Module.

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Anonymizer.dll file information

The process known as Anonymizer BHO Core Module or Anonymizer Module belongs to software Anonymizer Free Bar or Anonymizer Bar by Anonymizer (

Description: Anonymizer.dll is not essential for the Windows OS and causes relatively few problems. The file Anonymizer.dll is located in a subfolder of "C:\Program Files" (generally C:\Program Files\ANONYMIZER\CORE\). Known file sizes on Windows 10/8/7/XP are 274,432 bytes (75% of all occurrences) or 114,688 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 2F2FBF0D-254F-11D5-B1E5-0050DAD7AF62. The program has no visible window. The file is able to monitor web browsers. The service has no detailed description. It is not a Windows system file. Anonymizer.dll is able to monitor applications. Therefore the technical security rating is 67% dangerous.

Uninstalling this variant: If you have any problems with Anonymizer.dll, you may also uninstall the software Anonymizer Bar or Anonymizer Free Bar using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify Anonymizer.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as Anonymizer.dll. Therefore, you should check the Anonymizer.dll process on your PC to see if it is a threat. If Anonymizer BHO Core Module has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


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Best practices for resolving Anonymizer issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active Anonymizer process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the Anonymizer.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

Anonymizer.dll [all]