What is AcroIEHelperShim.dll?

The genuine AcroIEHelperShim.dll file is a software component of AcroIEHelperShim Library by Adobe Systems.
A browser helper object from Adobe, the Acrobat Helper Shim integrates seamlessly with Internet Explorer to assist with the viewing and manipulation of PDF documents. The BHO is not visible until a PDF is opened, at which point your browser displays a PDF option menu with most of the features of Abobe Reader included. Located in San Jose, California, Adobe was founded in 1982. Adobe applications focus on creative products for both consumers and businesses.

AcroIEHelperShim stands for Acrobat Internet Explorer Helper Shim

AcroIEHelperShim.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.

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AcroIEHelperShim.dll file information

The process known as Adobe PDF Helper for Internet Explorer or Adobe Reader (version 9.4.2) belongs to software AcroIEHelperShim Library or Adobe Common File Installer or Adobe Acrobat (version 9 Pro Extended, 9 Standard) or Adobe PDF Reader Link Helper Shim or Adobe Reader (version 9) or Sun ODF Plugin for Microsoft by Adobe Systems (

Description: AcroIEHelperShim.dll is not essential for Windows and will often cause problems. The file AcroIEHelperShim.dll is located in a subfolder of "C:\Program Files\Common Files" or sometimes in a subfolder of "C:\Program Files" or in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 75,128 bytes (29% of all occurrences), 75,200 bytes and 11 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 18DF081C-E8AD-4283-A596-FA578C2EBDC3. The program is not visible. AcroIEHelperShim.dll is a Verisign signed file. The AcroIEHelperShim.dll file is able to monitor web browsers. It is not a Windows system file. The file has a digital signature. The process can be uninstalled in the Control Panel. Therefore the technical security rating is 27% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you have any problems with AcroIEHelperShim.dll, you can uninstall the software Adobe Reader using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program), ask Customer Support to assist you or update the program to the latest version.

Recommended: Identify AcroIEHelperShim.dll related errors

Important: Some malware camouflages itself as AcroIEHelperShim.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the AcroIEHelperShim.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

From Adoe, Said to improve call of Acrobat Within IE when displaying a PDF. I dislike this as it's a potentila host for trojan. So I delete it (doens't see any difference in IE calling PDF after that).
Dit is legitieme software van Adobe Reader, Dit is bijvoorbeeld nodig om Youtube filmpjes te kijken of spelletjes te spelen
  Kenyen   (further information)
"acroiehelperShim.dll" is an Internet Explorer helper application. It allows you to display Adobe Acrobat (PDF) files directly within your web browser, rather than having to launch Acrobat Reader.
  Dr. Ashley   (further information)
unable to delete, even as administrator. not required for youtube. any software refusing to be deleted and not initially requesting your permission to be installed should be regarded as suspicious.
acroiehelpershim.dll belongs to AcroIEHelperShim Library developed by Adobe Systems
for Adobe Reader X 10.0.1: this BHO is; 62,376 bytes; 1-30-2011; under XP SP3
  Jack E Martinelli MS MVP 2001-06  
i dont like BHOs on my system, they can be compromised. Autoruns, Spybot & many others allow you to easily disable/enable. i disable with no adverse effect. you can always enable again if needed.
Helper Adobe PDF Link Helper Adobe Systems Incorporated C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll Adobe PDF Helper for Internet Explorer - Displays PDFs in Internet Explorer. Configures Internet Explorer web browser to open PDF files either in the browser window or in a separate Adobe Acrobat window. To configure the browser, you must have Adobe Acrobat or Adobe Reader installed. Acrobat and Adobe Reader include this ActiveX plug-in file that allows one to use Microsoft Internet Explorer to view PDF files on Windows.
  JPD   (further information)
My Search find a Adobe Reader.
  Reginald Addison   (further information)

Rating chart

Summary: Average user rating of AcroIEHelperShim.dll: based on 13 votes with 9 user comments. 5 users think AcroIEHelperShim.dll is essential for Windows or an installed application. 3 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users think AcroIEHelperShim.dll is dangerous and recommend removing it. 2 users don't grade AcroIEHelperShim.dll ("not sure about it").

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Best practices for resolving AcroIEHelperShim issues

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

AcroIEHelperShim.dll [all]