"Access Violation (0xC0000005)" error message occurs when you quit Disk Defragmenter

This article applies to Windows 2000. Support for Windows 2000 ends on July 13, 2010. The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000. For more information see the Microsoft Support Lifecycle Policy.


After you use the Disk Defragmenter tool to analyze or to defragment your hard disk and then you quit Disk Defragmenter, you receive an access violation error message that is similar to the following:
An application error has occurred and an application error log is being generated.
Exception: access violation (0xC0000005), Address:


Hotfix Information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date        Time   Version        Size     File name
2003/05/05 19:53 5.0.2195.6743 109,328 Dfrgui.dll
Note Because of file dependencies, this hotfix requires Windows 2000 Service Pack 3 (SP3).


To use the Disk Defragmenter tool to work around this problem, follow these steps:
  1. To start the Defragmentation tool, right-click My Computer, and then click Manage.
  2. Click on Disk Management, and then click Disk Defragmenter.
  3. Select a volume to defragment, and then click the Defragment button.
  4. After the Defragmentation Completed dialog box is displayed, click the Close button.
  5. Wait until the Analysis and Defragmentation displays are updated and the volume is enumerated. You may see a Resizing the color image message as the displays are being updated.
  6. Exit the Defragmentation tool.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

More Information

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New file naming schema for Microsoft Windows software update packages
For additional information about how to obtain the latest Windows 2000 Service Pack, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to obtain the latest Windows 2000 service pack


Article ID: 818888 - Last Review: Dec 16, 2009 - Revision: 1