What is AcroIEFavClient.dll?

The genuine AcroIEFavClient.dll file is a software component of Adobe PDF Toolbar for Internet Explorer by Adobe Systems. An add-on for Internet Explorer, the Adobe PDF Toolbar gives you the ability to view PDF documents in your browser, as well as create PDF documents from an existing web page or email. It allows you to convert the entire page, or convert based on a selection. Additionally, you can create a PDF off of an existing link on the webpage selected. Adobe Systems Incorporated is based in San Jose, CA and provides a multitude of creative multimedia and software products. Founded in 1982, Adobe currently has offices all over the world.

AcroIEFavClient stands for Acrobat Internet Explorer Favorite Client

AcroIEFavClient.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 Toolbar.

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AcroIEFavClient.dll file information

The process known as Adobe PDF Toolbar for Internet Explorer or Adobe IE plugin or Adobe Acrobat (version 6.0 Professional, 6.0 Standard, 6.0.1 Professional, 6.0.1 Standard, 6.0 Professional - English, Français, Deutsch, 6.0.1 Professional - English, Français, Deutsch, 6.0 Standard - English, Français, Deutsch, 9 Standard - English, Français, Deutsch, 7.0 Professional, 9 Pro Extended - English, Français, Deutsch) or Adobe Acrobat XI Pro

belongs to software Adobe Acrobat (version 8 Professional, 9 Pro Extended, 3D, 9 Professional, 9 Standard, 3D TryOut, 8 Standard) or Adobe PDF Toolbar for IE or Adobe Common File Installer or Adobe Creative Suite (version 2) or Adobe IE plugin or Adobe Production Studio or Adobe Photoshop (version CS6, CS2) or WinImage

by Adobe Systems (

Description: AcroIEFavClient.dll is not essential for the Windows OS and causes relatively few problems. AcroIEFavClient.dll is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the "My Files" folder—mostly C:\Program Files\Adobe\Acrobat 6.0\Acrobat\ or C:\Program Files\Adobe\Acrobat 7.0\Acrobat\. Known file sizes on Windows 8/7/XP are 147,456 bytes (56% of all occurrences), 225,280 bytes and 5 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 AE7CD045-E861-484f-8273-0445EE161910 or F4971EE7-DAA0-4053-9964-665D8EE6A077. The program is not visible. AcroIEFavClient.dll is able to change the behavior of, or monitor Internet Explorer. The service has no detailed description. AcroIEFavClient.dll is not a Windows system file. You can uninstall this program in the Control Panel. The program has no file description. Therefore the technical security rating is 59% dangerous; however you should also read the user reviews.
You could do the following:
  1) uninstall the software Adobe Reader using the "Add or Remove Programs" function of Windows Control Panel (Windows: Start, Settings, Control Panel, Add or Remove Programs)
  2) ask Customer Support to assist you
  3) verify that you have installed the latest version.

Recommended: Identify AcroIEFavClient.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as AcroIEFavClient.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the AcroIEFavClient.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Adobe plugin for PDFs from Word etc
adobe acrobat 7 update
It is able to monitor Internet browsers. If company's were ethical, and never compromised the clients privacy these helpful programs would be okay, Why can I not be permitted to uninstall Acrobat Update? If it is not absolutley necessary for the program to funktion I don't want to be forced to have it running, for what ever it is really doing.
I can't immagine why anyone would find the Acrobat plugin dangerous. You need this running for the program to work correctly.
seems to be harmless. used for Adobe plugin. just be careful
Adobe Acrobat 6 Pro WWW to PDF Plugin
it deleted my copyrights PDF's and did a call back to Adobe
Adobe just upgraded
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of AcroIEFavClient.dll: based on 54 votes with 9 reviews. 38 users think AcroIEFavClient.dll is essential for Windows or an installed application. 5 users think it's probably harmless. 8 users think it's neither essential nor dangerous. One user suspects danger. 2 users think AcroIEFavClient.dll is dangerous and recommend removing it. 3 users don't grade AcroIEFavClient.dll ("not sure about it").

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Best practices for resolving AcroIEFavClient issues

A clean and tidy computer is the key requirement for avoiding problems with AcroIEFavClient. 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 doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the AcroIEFavClient.dll process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

AcroIEFavClient.dll [all]