What is AcroIEHelper.dll?

The genuine AcroIEHelper.dll file is a software component of Adobe Acrobat by Adobe Systems.
AcroIEHelper.dll is a DLL (Dynamic Link Library) file that is part of Adobe Acrobat, a group of software and web services created by Adobe, to create, view, modify and print files in the Portable Document Format (PDF). DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not a critical Windows component and should be removed if known to cause problems. Adobe Acrobat comes bundles with Reader (formerly Acrobat Reader), a freeware tool that can view, print and annotate PDF files; Acrobat (formerly Acrobat Exchange), a paid software that can create PDF documents; and, a file hosting service. Adobe Systems Incorporated is an American software giant that develops software products for web design, video editing, web hosting, image editing, servers, as well as formats such as Flash and PDF. The company was established in 1982 by Charles Geschke and John Warnockin and is currently headquartered in San Jose, California.

AcroIEHelper stands for Adobe Acrobat Internet Explorer Helper

AcroIEHelper.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 Adobe PDF Helper.

Click to Run a Free Scan for AcroIEHelper.dll related errors

AcroIEHelper.dll file information

The process known as Adobe PDF Helper for Internet Explorer or Adobe Acrobat IE Helper (version 7.0 for ActiveX, 6.0 for ActivieX) or Adobe Reader (version 7.1.0, 7.0, 9.2, 8.1.2, 8.1.4, 8.1.5, 8.1.3) or Adobe Acrobat (version 7.0 Professional)

belongs to software AcroIEHelper Library or Adobe Acrobat (version 8 Professional, 8 Standard, 9 Pro Extended, 9 Standard) or Adobe Reader (version 8) or Adobe Common File Installer or Adobe Acrobat IE Helper or Adobe Creative Suite (version 2) or Adobe Photoshop (version CS5) or Adobe Control for Internet Explorer

by Adobe Systems ( or Adobe (

Description: AcroIEHelper.dll is not essential for the Windows OS and causes relatively few problems. The file AcroIEHelper.dll is located in a subfolder of "C:\Program Files\Common Files" (e.g. C:\Program Files\Adobe\Acrobat 6.0\reader\ActiveX\ or C:\Program Files\Adobe\Acrobat 7.0\ActiveX\). Known file sizes on Windows 10/8/7/XP are 62,080 bytes (79% of all occurrences), 61,888 bytes and 12 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 06849E9F-C8D7-4D59-B87D-784B7D6BE0B3 or 54A98DD5-0357-4EF1-A698-BB08E73CF725 or DA67288F-069B-449D-BA4C-0CE0C3C42265 or 8CF21D67-EDE6-4BBC-A009-D2CF3AAA0AE2. It is a Verisign signed file. The program has no visible window. AcroIEHelper.dll is able to change the behavior of, or monitor Internet Explorer. The service has no detailed description. The AcroIEHelper.dll file is not a Windows system file. The file is certified by a trustworthy company. The application can be uninstalled in the Control Panel. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case you experience problems using AcroIEHelper.dll, you can also consult Adobe’s Customer Service, update the program or safely remove the program using the uninstall program of Adobe Reader (Control Panel ⇒ Uninstall a Program).

Recommended: Identify AcroIEHelper.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as AcroIEHelper.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the AcroIEHelper.dll process on your PC to see if it is a threat. If Adobe PDF Helper 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 can't remove process like this from control panel Settings Control Panel Add/Remove Programs
AcroIEHelper in Windows\inf\ is a virus, Turn off Adobe Reader Addon to assist in cleaning.
It displays PDF files in most browsers. Not resource heavy. Some sites require PDF files to display in your browser. Best to leave it on.
Acrobat Pro will not install on Vista w/o it.
since it did not register successfully in a recent re-install, I have not been able to open web pages that are pdfs... like my "paperless" utility bills etc. in my case, this little dll is very important and very much missed!
Froze my PC hard twice, and locked up Acrobat many times. Tried to get rid of it and it came back. Now EVERYTHING I click on a popup comes up and says it's looking for Acrobat... Adobe Acrobat also does not deliver much for this pain - stick to the Reader or use Ghostscript/Ghostview...
I had the same problem as Frits - not able to delete this file so couldn't reinstall Adobe Reader to get it to work, so couldnt use pdf files. However, found the solution for my pc - downloaded Windows Installer CleanUp tool from Microsoft site, and ran it.. then was able to install Acrobat Reader Yippee!! Finally can look at pdf files again.
Not necessary as an auto startup.
More comments can be found here:
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Rating chart

Summary: Average user rating of AcroIEHelper.dll: based on 83 votes with 9 reviews. 42 users think AcroIEHelper.dll is essential for Windows or an installed application. 14 users think it's probably harmless. 15 users think it's neither essential nor dangerous. 4 users suspect danger. 8 users think AcroIEHelper.dll is dangerous and recommend removing it. 9 users don't grade AcroIEHelper.dll ("not sure about it").

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Best practices for resolving AcroIEHelper issues

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

AcroIEHelper.dll [all]