This process is a component of MusicMatch Jukebox, a program that allows you to find, catalog and play music files, as well as burning them to CD. MMDiag.exe is a diagnostic service that runs in the background while MusicMatch is active. If the main process crashes with an error, MMDiag.exe records diagnostic information to help MusicMatch's programmers correct any problems in the software. 

If you want a detailed security rating about your MMDiag.exe (and all other running background processes) read the following user opinions, and download the free trial version of Security Task Manager.

Note: Any malware can be named anything - so you should check where the files of the running processes are located on your disk. If a "non-Microsoft" .exe file is located in the C:\Windows or C:\Windows\System32 folder, then there is a high risk for a virus, spyware, trojan or worm infection! Check it out!

Click to Run a Free Scan for MMDiag.exe speed issues

Users Opinions

635 users ask for this file. 13 users rated it as not dangerous. 3 users rated it as not so dangerous. 5 users rated it as neutral. 5 users rated it as little bit dangerous. 1 user rated it as dangerous. 5 users didn't rate it ("don't know").

All comments about MMDiag.exe: Opened on it's own after bootup.   oecpat mmdiag.exe is a process that belongs to the MusicMatch Jukebox. MusicMatch Jukebox is a multimedia application supporting most know media formats.   Stew Pidasso Music Match Jukebox Component   Joseph Dinwiddie of musicmatch   santo it won't let you startup MusicMatch   bigspender MMDiag is a musicmatch file. It causes a logging and tracing error message to appear, which is a nuisance; it is not dangerous, however. I deleted it from the musicmatch folder (found in program files) and this has fixed the problem with no repercussions.   Malcolm Task Manager says it has caused 1.23 million page faults in the last 45 minutes. Memory usage is 224K and it gets a fair amount of CPU. Don't know what to do about it.   Jim Cook Removing MusicMagic Jukebox really helped the performance of my system. MMdiag.exe was a major part of slowing my machine because it does many page faults per second.   Jim Cook This file is associated with musicmaych jukebox, a music program application  See also: Link   Tom Creates logging mode entry. Log File   RJames Music Match Jukebox process   Rick MusicMatch tracks the music you play, so it can advise on similar music you might like. On some XP systems (with Version 10) it doesn't start up properly and gives an annoying box all the time. Rename MMDiag.exe to get rid of it.   Sijpie It constantly causes Musicmatch to crash. But it is a needed file. Just junk software   I deleted the file. That ended the logging and tracing error.   Tim Was in Windows prefetch, I don't think it was original Music Match file because it was created yesterday when I visited unknown web site, was using 100% CPU, original file and update was in Music Match and was over a year old so I think it was adware loaded yesterday.   JW As you said MusicMatch tracking, I just deleted it. Now everything works...Thanks   MoRt If you use Musicmatch Jukebox, keep this file. I've had it forever, and my system works fine. It does not eat up my memory, cause me error messages, page faults, or the disabling of the Jukebox. If you know you're not going to be using MMJ, open Task Manager, and end it's process (until system restart). Might as well end mim.exe, too since they go hand-in-hand. Or, you could uninstall the Jukebox in Add or Remove Programs.  See also: Link   Haggis McMutton musicmatch says it's a diagnostic file. I renamed 3 instances - caused no problems   magicv8 its part of Musicmatch 10   doogle Renamed mmdiag.exe that seems to have fixed the problem. MM opens fast and no error message   tango It worked fine for 2 years, now it page faults constantly - 2.5 million page faults so far today. It works on some systems, bad on other. I deleted it and musicmatch works fine.   Mark can be troublesome, mine completed 17,000,000 page faults in 12 hours. I delete the file and musicmatch is fine.   Mark It's a musicmatch process. Commenting it out is OK   Jim If you know more about MMDiag.exe, share your knowledge and help other users. Security Rating:  --- don't know ---  1 (not dangerous)  2  3 (neutral)  4  5 (dangerous) What do you know about this file: Link for more details: Your Name:

More process information

Is MMDiag.exe spyware or a virus, trojans, adware or worm? Is there a known MMDiag.exe error?

• Google
• Discussion boards
• Search for spyware
• Spyware Doctor (spyware removal)
• SpeedUpMyPC (cleans, repairs and optimizes your computer)
• Security Task Manager (understand what's running on your computer)

Other Processes

tablet.exe 000stthk.exe cfsvcs.exe MMDiag.exe isstart.exe servicelayer.exe ibmpmsvc.exe nclaunch.exe taskswitch.exe tgcmd.exe ssaad.exe [all processes]