Consider the following scenario:
- You have installed file security products on a Microsoft Windows XP Service Pack 2 (SP2)-based computer.
- You are using drives that are formatted to use the NTFS file system.
- You copy an NTFS encrypted file to a new location on the computer.
In this scenario, you receive the following message: You receive this message even though you copied the encrypted file to a folder that does not already contain the encrypted file.
This problem occurs because some file security products disable the NTFS encryption function by using a file system filter driver. The filter driver disables the NTFS encryption function by returning an error on data encryption requests. The Lsasrv.dll module does not correctly handle this error.
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. 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, 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.
No prerequisites are required.
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
The English version of this hotfix 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 tool in Control Panel.
Date Time Version Size File name
27-Jul-2005 02:33 5.1.2600.1721 666,624 Lsasrv.dll
27-Jul-2005 02:24 5.1.2600.2727 726,016 Lsasrv.dll
26-Jul-2005 23:49 5.1.2600.2727 30,720 Arpidfix.exe
25-Feb-2005 03:35 22.214.171.124 371,936 Updspapi.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
Description of the standard terminology that is used to describe Microsoft software updates