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Defragment does not work

Hi, I have window XP pro version 2002 service pack 2, Dell 8400

I got a little computer problem.

I lost defrag in my start, all program, accessories, system tools, defrag.

Also lost it in start, my computer, right click local disk (c:), property, tools defrag.

When I click on the defrag in either area this is what I get in a pop up blue box..

Microsoft Management Console

MMC cannot open the file c:windowssystem32dfrg.msc.
This may be because the file does not exist, is not an MMC console,
or was created by a later version of MMC. This may also be
because you do not have sufficient access rights to the file.

But if I go to
type in, Compmgmt.msc
Then click on, Disk Defragmenter

Then it'll run this way. My question is, how in the heck can I get itback and recognized in those first two areas that I mentioned? It hasalways worked in there, and I haven't a clue as to why it is no longerbeing recognized. Can you help me out????
I HAVE WINDOWS XP. For months now I have been unable to disk defragment thru - START - THEN CLICKING ON DISK DEFRAGMENT. When I try the following pops up?!?!?

MMC cannot open the file C:WINDOWSsystem32devmgmt.msc.

This may be because the file does not exist, is not the MMC console, or was created by a later version of MMC. This may also be because you do not have sufficient access rights to the file.

Posted by on

  • 2 more comments 
  • LUISA Oct 17, 2008


  • LUISA Oct 17, 2008


  • LUISA Oct 19, 2008


  • Puneet Jain
    Puneet Jain May 11, 2010

    Could you please send me a Hijackthis log of your PC.

    Send it to techin.scott at the gmaildotcom

    I would like to analyse your PC, also let me know the PC Configuration (All hardware details)

    Have you noticed since this happened after a specifc thing (viz after installation or removal of any application etc)

    May be some sort of virus infection, and corrupt window.

    Reply me so I can figure it out.


3 Answers

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  • Contributor
  • 16 Answers

Go here

scroll halfway down and click the link...or click this if you can on this site.

download and install.

your fixed.

i just had the same problem and it worked for me.

Posted on Aug 10, 2009

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  • Master
  • 558 Answers

I would suggest you to go for Roll Back PC on previous date. Do a System Restore to the date you think system running better. Otherwise it would need repair installation of Window with the Recovery or Installation CD of win XP.
Regards Ellin

Posted on Oct 17, 2008

  • 2 more comments 
  • Puneet Jain
    Puneet Jain Oct 17, 2008

    These are the steps you need to follow with your Operating system and also having the Recovery or Installation CD:

    Repair a Damaged Installation

    Please note: If you make a mistake when following the steps below, you will not be offered the option to repair a damaged installation. Follow these steps precisely (or reboot from the CD and start again).

    1. Boot from the Recovery CD (press any key when prompted).
    2. Choose Setup (press ) - do not choose the R=Recovery Console option.
    3. Press F8 to agree to the license agreement.
    4. Press R to Repair the selected Windows XP installation.
    5. The setup program will copy files to your hard disk and reboot automatically.
    6. Do NOT press any key when the CD boot code is run, allow the code to timeout, the system will boot from the hard disk and continue with the installation from the CD.
    7. Answer the configuration questions once the computer has finished re-installing. You will be prompted for your Product Key which you will find at the back of your system. You will also need to Activate your system within 30 days, if you have not done so previously (see below).

    After this please let me know and give the solution atleast Helpful rating

    Have a Nice day,


  • Puneet Jain
    Puneet Jain Oct 18, 2008

    Reply please if the soluton work for you.

    Give your rating to the solution either Helful or Fixya.

    If you dont fix the problem yet by the solution given then I would suggest you more options, let me know for it.

    Since your voting is precious to me in providing the help for others.

    Have a Nice day.



  • Puneet Jain
    Puneet Jain Oct 20, 2008

    If you dont have CD, then I would suggest you to take it to repair shop, where the engineer can load the Window with his CD. Go to your nearby Repair shop.

    Thanks for using FixYa and voting the solution.

  • Puneet Jain
    Puneet Jain Oct 20, 2008

    Also you can try in this last moment before going to Repair Shop.

    Press F8 during bootup, a black screen shows with options to select.

    Select if view the option that says: Load to Factory setting or Load to Restore Default (If i am correct in stating)

    Check whether running this where you can go (most of time window itself load without CD to the state when it is purchased new)




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  • PC Laptops Master
  • 4,338 Answers

You need to re-register the defragmenters snap-in files, and the basic registry entries.

  • First open up a Command Prompt, this can be found at:
    Start -> All Programs -> Accessories -> Command Prompt

  • Change into your windows\system32 directory. Your windows directory will be either windows or winnt. Type:
    cd \windows\system32

  • Register the defrag components, by typing:
    regsvr32 dfrgsnap.dll
    regsvr32 dfrgui.dll

    Defragment does not work - registerdefrag.gif

  • At this stage, you may find the defragmenter works. If not, there is one more step you can do.

    Using Windows Explorer browse to your windows\inf folder.
    In there you will find a file called dfrg.inf right click this file, and select Install.
  • If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
    Thanks, Joe

Posted on Oct 16, 2008

  • JDTec
    JDTec Oct 16, 2008

    I also found this that may help:

    Anyone getting the "Disk Defragmenter Could not start" message and on Windows XP Home This is what worked for me. Go to Control Panel, Select System and select the Advance Tab. Now Select Settings Under Performance and again select the advance tab. Under Virtual Memory select Change. Make sure that the Paging File Size for selected Drive for the Drive partition you want to Defrag has either a custom at least 2 times the amount of installed RAM if the space is available or is set to System Managed Size. Once I did this Defrag started working again. I don't know how the Page file got turned off on my system but this has been driving me mad for months!! Hope it helps someone else out there !!!
    Thanks to JB.


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