Symptoms:
- When you attempt to launch a Microsoft Management Console Snap-in file (.msc file) you receive the error “MMC cannot open the file c:\path\filename.msc“
Explanation:
This is being caused by the remote access server console disconnecting abnormally and causing corruption in the user profiles MMC snap in’s reference file.
Luckily there is a relatively simple solution.
Solution:
- Click Start > Run
- Type the following:
regsvr32 C:\Windows\system32\msxml3.dll - Click OK and WAIT until Windows confirms that the dll has been registered successfully.
- Now open Windows Explorer and browse to the following folder:
C:\Documents and Settings\username\Application Data\Microsoft\MMC - Look through the files in this folder and locate the file with the same name as the msc file that appears in the error message.
- Rename the file to filename_old
- Now try to launch your console again and the error should be resolved.


Thanks, that resolve my problem and now defrag is working
Thanks For Your Wonderful Solving Idea.This Help Me To Solve This Problem And It Can Release My Headache Right Now…
Dear Ross Whitney,
Your Technic Before Got Help Me To Solve My Defragment Problem…
I Need Your Advise To Solve My Internet Explorer…
When I Open The Internet Explorer, It Will Appear Something Like This;
Error loading C:\WINDOWS\system32\inetcpl.cpl
The operating system cannot run %1.
I Already Instal The Upgrade For IE 7, But It Still Have The Same Problem..
Can You Help Me,
Thanks,
Don