What is idaiehlp.dll?

Idaiehlp.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 IE 4.x-6.x BHO.

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Idaiehlp.dll file information

The process known as IE 4.x-6.x BHO for Internet Download Accelerator belongs to software Internet Download Accelerator or Internet Download Accelerator version by WestByte (

Description: Idaiehlp.dll is not essential for Windows and will often cause problems. Idaiehlp.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 152,576 bytes (31% of all occurrences), 168,224 bytes and 6 more variants. 
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 2A646672-9C3A-4C28-9A7A-1FB0F63F28B6. It is a file with no information about its developer. The program is not visible. Idaiehlp.dll is able to change the behavior of, or monitor Internet Explorer. There is no detailed description of this service. The idaiehlp.dll file is not a Windows core file. Therefore the technical security rating is 58% dangerous, however you should also read the user reviews.

Uninstalling this variant: There is a possibility to do the following:
  1) completely remove Internet Download Accelerator or Internet Download Accelerator version (Control Panel ⇒ Uninstall a Program)
  2) contact Customer Service
  3) update to a possibly bug-fixed version.

Recommended: Identify idaiehlp.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as idaiehlp.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the idaiehlp.dll process on your PC to see if it is a threat. If IE 4.x-6.x BHO 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

i think it's just a plugin to the explorer... but i also think you sould run it yourself and don't let it just run all the time in the background as a plugin.
causes some internet explorer problems when explorer integration is checked .
  marcus lewis   (further information)
I think it;s a Internet download accelerator process
dangerous but this file is necessary for the accelerator download enable and use
Integrates IE with IDA
  Mr. Announymous Guy  
Integration for Internet Download Accelerator. It is only a plugin which allows IDA to start the download from your browser. Users can safely disable it by using IDA configuration menu under "General-Intergration" from the side bar. Also can be safely disabled from your browser "Manager Addons..." from tools menu. If you don't have IDA installed then delete this plugin at your own risk.
  Joe (IDA User)  
It is used by my Internet Download Manager

Summary: Average user rating of idaiehlp.dll: based on 5 votes with 7 user comments. 2 users think idaiehlp.dll is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. One user thinks idaiehlp.dll is dangerous and recommends removing it. 2 users don't grade idaiehlp.dll ("not sure about it").

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Best practices for resolving idaiehlp issues

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

idaiehlp.dll [all]