"The parameter is incorrect" error when you run Defrag.exe in Windows 8.1 or Windows Server 2012 R2

Applies to: Windows 8.1Windows 8.1 EnterpriseWindows 8.1 Pro More

Symptoms


When you run the Disk Defragmenter (Defrag.exe) utility on a volume on a computer that's running Windows 8.1 or Windows Server 2012 R2, the defrag operation fails. Additionally, event ID 257 is logged in the Application log. This event displays a "The parameter is incorrect" error message.

In this case, you may be unable to optimize the volume for space efficiency.

Resolution


Hotfix information

A supported hotfix is available from Microsoft Support. 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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, go to the following Microsoft website: 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.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows 8.1
  • Windows Server 2012 R2

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References


Learn about the terminology that Microsoft uses to describe software updates.