You cannot enable Write Filter on a Windows Embedded-based device that has Windows Embedded Device Manager 2011 installed


Assume that you run a System Center Configuration Manager 2007 task sequence on a Windows Embedded-based device. Additionally, Windows Embedded Device Manager 2011 is installed on a compressed volume on the device. In this situation, the Write Filter feature may be disabled, and you cannot re-enable it.


This issue occurs because of an error that occurs when data is committed to a Write Filter-protected volume that uses NTFS compression.


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 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.

This hotfix updates the Edmstate.dat file so that this issue no longer occurs. Additionally, we recommend that you do not select the
Compress contents to save disk space check box in the Advanced Attributes window for the Edmstate.dat and Edlog.txt files.


To apply this software update, you must have Windows Embedded Device Manager 2011 installed.

Restart requirement

You must restart the computer after you install the hotfix if the affected files are being used.

Update replacement information

This update includes the hotfix that is described in Microsoft KB article 2602101.

File information

The English version of this software update package has the file attributes (or later file attributes) 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 item in Control Panel.
File information
File nameFile versionFile sizeDateTimePlatform
Fid_edmstateNot applicable4,09613-Sep-201122:33Not applicable


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

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates