How to remove the MFCDLL Shared Library malware

Most antivirus programs classify java.dll as a harmful extension to Internet Explorer: such as W32.SillyFDC (detected by Symantec), and WORM_AGENT.EOW (detected by TrendMicro). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated MFCDLL Shared Library software, it's no surprise. In most cases, this kind of adware is installed on the side when you install a freeware product like a Youtube Downloader or a PDF Converter. In the following selection, you can read more about MFCDLL Shared Library and how to get rid of it.

Click here to automatically remove the MFCDLL Shared Library malware

Java.dll file information

The process known as MFCDLL Shared Library - Retail Version appears to belong to software Microsoft® Visual C by Microsoft (

Description: Java.dll is not essential for Windows and will often cause problems. The java.dll file is located in a subfolder of C:\Windows. The file size on Windows 10/8/7/XP is 216,166 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 6E28339B-7A2A-47B6-AEB2-46BA53782379 or 93F72049-C9FC-4D5C-8F77-D88A0E00F03C or FA96918E-7366-4FDE-8EEB-12A3C11C0001 or 846F96C0-165A-471A-98E3-E642D0687C04 or 00000000-0000-0000-0000-000000000000. The java.dll file is located in the Windows folder, but it is not a Windows core file. The program has no visible window. Java.dll is able to monitor web browsers. The service has no detailed description. The file is not a Windows core file. Java.dll is able to monitor applications and manipulate other programs. Therefore the technical security rating is 70% dangerous.

Recommended: Identify java.dll related errors

External information from Tony Klein:

Important: You should check the java.dll process on your PC to see if it is a threat. If MFCDLL Shared Library 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.


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Best practices for resolving java issues

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

java.dll [all]