How to remove the mscore malware

Most antivirus programs classify mscore.dll as a harmful extension to Internet Explorer: for instance (detected by Kaspersky), and TROJ_DLOADER.XJS (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 mscore 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 mscore and how to get rid of it.

Click here to automatically remove the mscore malware

Mscore.dll file information

The process known as mscore belongs to software mscore by unknown.

Description: Mscore.dll is not essential for the Windows OS and causes relatively few problems. The mscore.dll file is located in the C:\Windows folder. The file size on Windows 10/8/7/XP is 217,088 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 31CBB13B-244D-4C44-AED5-DCAD70F66281 or 428FA4A4-C8EC-427C-85DE-11C80F67893A. There is no file information. The program has no visible window. Mscore.dll is located in the Windows folder, but it is not a Windows core file. The mscore.dll file is able to change the behavior of, or monitor Internet Explorer. The service has no detailed description. It is not a Windows core file. Therefore the technical security rating is 80% dangerous, however you should also read the user reviews.

Recommended: Identify mscore.dll related errors

If mscore.dll is located in the C:\Windows\System32 folder, the security rating is 82% dangerous. The file size is 21,525 bytes. There is no description of the program. The program has no visible window. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. Mscore.dll is not a Windows core file. mscore.dll appears to be a compressed file.

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

mscore.dll is part of .Net Framework 1.1
system file or program

Summary: Average user rating of mscore.dll: based on 2 votes with 2 user comments. 2 users think mscore.dll is essential for Windows or an installed application.

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Best practices for resolving mscore issues

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

mscore.dll [all]