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WinXP Defragmenter doesn't work at all

by manide / February 4, 2008 3:40 AM PST

I cannot run Windows built-in defragmenter. When I try to acces it, I get this message:

Microsoft Management Console
MMC cannot open the file C:\WINDOWS\system32\dfrg.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 acces rights to the file.

I get the same message when:
-Start>My computer>right click>Manage

Could anybody help me?

WinXP Pro, SP2

P.S.: 30-40 minutes before this happens, for the first time since I use Revo Uninstaller, I run Junk Files Cleaner.

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Re: can't run defrag
by Kees Bakker / February 4, 2008 3:53 AM PST

- What way do you try to run it? There are several ways. How about defrag c: -a or defrag c: -f from the command prompt?
- Does c:\windows\system32\dfg.msc exist or doesn't it?


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Re: can't run defrag
by manide / February 4, 2008 5:03 AM PST
In reply to: Re: can't run defrag

1.Start>All programs>Accesories>System tools>Disk Defragmenter
2.My Computer>C:\ or D:\ drive right click>Properties>Tools>Defragment now...

Yes, C:\WINDOWS\system32\dfrg.msc exists.

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Re: defrag
by Kees Bakker / February 4, 2008 5:06 AM PST
In reply to: Re: can't run defrag

You didn't answer my question about running defrag from the command prompt. That might be a good work-around.

If that doesn't work or you don't like it, try sfc /scannow to check for missing or system files, as described in

Hope this helps.


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Re: can't defrag
by manide / February 4, 2008 8:36 AM PST
In reply to: Re: defrag

Thanks a lot, but doesn't work.

I run defrag from command promt - no result.
sfc /scannow didn't solve the problem.

I reinstalled Windows on Jan 15th (and before, 16 months ago), when I created a backup image for C:\ partition with Acronis. So, two hours ago I used that image.

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MMC Error...
by Grif Thomas Forum moderator / February 4, 2008 8:46 AM PST
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by Grif Thomas Forum moderator / February 4, 2008 8:49 AM PST

Click Start, Run and type:

regsvr32 msxml3.dll

Press "Enter"

Hope this helps.


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by manide / February 4, 2008 10:02 AM PST
In reply to: Or...

I've just restored entire partition from a backup image which I created after last Windows reinstall.

Thanks a lot for your promtness and for the useful informations you gave me!

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WinXP Defragmenter
by mark5067 / February 8, 2008 8:34 PM PST

Hi Manide,
I personally don't use the WinXP Defragmenter as it takes so much time to run. May I recommend a free one from "" which is faster and has really speeded up my pc, it's very simple to use too. It is called Auslogics Disk Defrag and is only 4.65MB. Good luck.
Pat, NZ.

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WinXP Defragmenter
by manide / February 8, 2008 9:36 PM PST
In reply to: WinXP Defragmenter

Now - me, neither. I've tried out Auslogics Disk Defrag and seems to be very good. But I've decided to test for a while Defraggler and JkDefrag, both free.

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Forget Windows Defrag
by DSHornet / February 8, 2008 9:45 PM PST
In reply to: WinXP Defragmenter

I've tried several defrag/optimizers over the years - Windows, Norton, Diskeeper, and a few others - but I downloaded JKDefrag a few weeks ago and I'm VERY impressed. I ran it with the defaults until I downloaded one of the GUI's that make it easy to do it as if using the command line prompt. The effect was an obvious and immediate improvement in performance.

The first time I successfully ran it, I had to boot into safe mode (F8) because it froze when running in normal mode. After that one time, it runs great in normal mode. The first time or two you use it, let it run overnight since it will have a lot of catchup work to do.

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by bonehead1617 / February 8, 2008 11:29 PM PST

I've heard quite a few people tell me horror storys from windows defrag' none of them good. Get Auslogics disk defrag from c-net downloads. It's free and it works very well. I use it once a week (because I download lots) and it really does help the performance of my comp. Sincerly,

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sory for my bad english
by greh / February 9, 2008 3:02 AM PST

runing the uninstal of some program you remove thet file from your pc, sorry you mast restore the windows or reinsall it. agen sorry for my bad english, confirm my message at i von to now resolts

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Try Diskeeper
by jjbrain / February 9, 2008 4:07 AM PST

I use Diskeeper 2007. I actually paid for the program - not something I do easily as there is so much good freeware out there. I really think Diskeeper was worth the price. It just quietly runs in the background and automatically keeps my drives defragmented. I have tried other programs including the worthless defragmenter that came with XP and I really the think that Diskeeper is best.

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Yer but Freebie
by morrie 52 / February 9, 2008 10:58 PM PST
In reply to: Try Diskeeper
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winxp defragmenter doesn't work at all
by nil desperandum / February 22, 2008 5:11 PM PST

I suggest you get one from the Iobit web site.
works a treat for me and it's free

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