What is mmtask.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the mmtask.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Mmtask.exe file information

Windows Task Manager with mmtask
Mmtask.exe process in Windows Task Manager

The process known as TODO: File description or Musicmatch System Tray Application belongs to software TODO: Product name or Musicmatch Jukebox by TODO: Company name or Musicmatch (

Description: Mmtask.exe is not essential for Windows and will often cause problems. Mmtask.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\. The file size on Windows 10/8/7/XP is 53,248 bytes. 
The file is not a Windows core file. The program has no visible window. The application starts when Windows starts (see Registry key: MACHINE\Run). Therefore the technical security rating is 49% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you are having problems with mmtask.exe, you can uninstall Musicmatch┬« Jukebox or MUSICMATCH Jukebox from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify mmtask.exe related errors

External information from Paul Collins:
There are different files with the same name:

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

Music Match software - used for ripping CDs
MMTASK.exe has been linked with the YAB.A virus! MMTASK.TSK is used by Music Match
This file is used by Musicmatch Jukebox to detect when a CD is inserted in your computer. When a CD is inserted, mmtask.exe launches Musicmatch Jukebox to play the CD. This file is not harmful. It follows the official Microsoft method to be notified of such events by Windows. That is, it exists so that Windows can tell it that a CD is inserted. Because it only responds to a Windows event, it does not use any CPU cyles, so it will not slow your system down. If you don't use Musicmatch Jukebox or you don't want it automatically playing CDs, you can safely remove this file.
It's a virus!
mmtask.exe from MusicMatch is harmless, but should it be partially or fully capitalized letters (e.g. Mmtask.exe or MMTASK.exe,) it is a VIRUS. GET RID OF IT!!! Block it first then delete it. Even if it is normal, (mmtask.exe) it may still be an ADWARE downloader, if it's not from MusicMatch. If you're not sure, GET RID OF IT!!! It's supposed to watch for you to insert a CD and automatically set up MusicMatch to use the CD (Record, play, etc.) but you can do all this manually.
  James Cox   (further information)
what bob said
  Jason(different one)  
I just reformatted my computer and it is in the list of running programs, all lower case, as James said; therefore the lower case version is safe but unnecessary
  Bill yesterday  

Rating chart

Summary: Average user rating of mmtask.exe: based on 15 votes with 8 user comments. 7 users think mmtask.exe is essential for Windows or an installed application. 3 users think it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger. 3 users think mmtask.exe is dangerous and recommend removing it.

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Best practices for resolving mmtask issues

A clean and tidy computer is the key requirement for avoiding problems with mmtask. 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.

To help you analyze the mmtask.exe 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

mmtask.exe [all]