Dealing With Mmc.exe Problems

Mmc.exe is an executable program for MMC (Microsoft Management Console) and is used to display various management plug-ins accessed from the Control Panel, such as the Device Manager and the Services consoles.

File Information

Mmc.exe is a core system file of the Windows Operating System. The file is located in C:\Windows\System32 folder. The most common size of the mmc.exe file is 815,104 bytes, but you may also find it in the following sizes:  774,144, 1,414,656, 1,790,464, 1,792,512, 1,354,752, 815,616, 848,896, 780,800, 774,656, 918,528, and 61,440 bytes.

Should I Terminate This Process?

The mmc.exe process is an integral part of Windows Vista/XP/2003/2000 and loads when you use any Administrative Tools. Although the process is not required for your system to run, you should not terminate this process unless you suspect it of causing problems.

Common Mmc.exe Problem and Solution

You may encounter a problem with mmc.exe when the process does not shut down even after you close the management console window that uses it.

A hotfix is available to fix this particular issue on a Microsoft Windows 2000 Server SP1. You can obtain the hotfix from the Microsoft support website and install it on your computer

Can the Mmc.exe file running on my PC be a virus?

Yes, it is possible. Although the true mmc.exe is a safe file, many malware programs are known to disguise themselves as the genuine mmc.exe file. Names of some such malware programs along with their file location are mentioned below:

Name of the Malware File Location
W32/Dzan-A %SystemRoot%
W32/Oscabot-I %SystemRoot%inisys.exe
W32/Lovgate-F %SystemRoot% or other locations)

Note: Here, %SystemRoot% is a variable and refers to the location where Windows is installed. By default, it is C:\Windows for Windows Vista, XP, 98/95/ME and C:\Winnt.for Windows NT.

Also, often malicious programs, such as virus, spyware etc take up similar name as existing system tasks to prevent users from identifying them. For instance, an unsolicited process may be present on your PC as mmmc.exe, mmcc.exe or mcm.exe.

Go through the list of current processes running on your computer to locate any discrepancies. To view current processes, press Ctrl + Alt + Del and click the Processes tab on the Windows Task Manager window. If you see any unsolicited process running, check the location where the file is located, and then kill the process.

Next, you need to delete the file from the system. It is important that you do not attempt to directly delete such unsolicited files, as you may lose important data in doing so. Instead, we recommend that you scan your computer using a reliable antivirus and antispyware utility. These utilities not only scan and remove malicious files from your PC, but also prevent these files from entering your system in the first place.

At times, mmc.exe errors may also occur if the registry entries of the exe file are either incorrect or corrupt. To prevent such errors from occurring, we recommend that you regularly scan your system registry using an advanced registry tool, such as RegServe.