What is isaddon.dll?

Isaddon.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 isaddon.dll.

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Isaddon.dll file information

The process known as isaddon.dll belongs to software Internet Explorer Security or Internet Explorer Security Plugin (version 2006) or Public Messenger ver or Gold Codec or Video ActiveX Object or VideoKeyCodec by unknown.

Description: Isaddon.dll is not essential for Windows and will often cause problems. Isaddon.dll is located in an undetermined folder. The file size on Windows 10/8/7/XP is 0 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 202a961f-23ae-42b1-9505-ffe3c818d717 or ae18da4e-be15-4925-81bb-890c04af0200 or 9 more variants. The file is a file with no information about its developer. Note: File does not exist any longer. The program has no visible window. The file is able to change the behavior of, or monitor Internet Explorer. There is no detailed description of this service. Isaddon.dll is not a Windows system file. Therefore the technical security rating is 66% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall the associated program (Start > Control Panel > Uninstall a Program > Brain Codec or Internet Explorer Security Plugin).

Recommended: Identify isaddon.dll related errors

Important: Some malware camouflages itself as isaddon.dll. Therefore, you should check the isaddon.dll process on your PC to see if it is a threat. If isaddon.dll 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.


User Comments

Security Task Manager says it doesn't exist but still shows up loaded in memory.
  Larry Perkins  
a part of incodec
Part of a hijacker program, A browser extention that wants you to buy a spyware remover to get rid of it.
Related to "Brain Codec 3.0" - A VIRUS (Self-maintaining trojan/maleware/spyware) very nasty.
  Perri Redder  
    (further information)
Malware, hard to get reid of.
Somehow linked to Trojans... Had problems with this file in the past
  Artur Borys  
i believe that there is another file that creates this one but it is only tempary, and i believe this is a virus but when i try to delete is it said it is write protected.

Rating chart

Summary: Average user rating of isaddon.dll: based on 18 votes with 8 user comments. 3 users suspect danger. 15 users think isaddon.dll is dangerous and recommend removing it.

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Best practices for resolving isaddon issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active isaddon process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the isaddon.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

isaddon.dll [all]