After you upload encrypted files from a computer that is running Windows XP, Windows Vista or Windows Server 2008 to a WebDAV share, the files remain encrypted

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Article ID: 959439 - View products that this article applies to.
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Problem description

On a computer that is running Windows XP, Windows Vista or Windows Server 2008, you have a folder that is encrypted by using Encrypting File System (EFS). You upload the files in the encrypted folder to a Web Distributed Authoring and Versioning (WebDAV) share folder. The files that are uploaded to the WebDAV share folder remain encrypted.

In this case, you may want the encrypted files to be decrypted during the file copy operation to the WebDAV share folder so that other users have access to the files. However, you cannot find a method to disable EFS encryption during the WebDAV file copy operation. This article helps you fix this problem.

CAUSE

This problem occurs because Windows XP, Windows Vista and Windows Server 2008 WebDAV clients maintain encryption information for secure file copy and storage operations.

RESOLUTION

A hotfix is available to resolve this problem. After you apply this hotfix, you have to change the registry to enable the hotfix. For more information, see the "Registry Information" section.

After you enable this hotfix, you see the following changes:
  • If you copy an encrypted file to a WebDAV share folder that is not encrypted, you are prompted that the encryption on the file will be removed if you continue with the file copy operation.
  • You cannot encrypt a file or a folder in a WebDAV share folder. This change is made by hiding the Advanced tab on the Properties page of a file or of a folder.

    Note This change only applies to WebDAV share locations.
  • If you copy an encrypted file to an encrypted folder on the WebDAV share folder, or if you overwrite an existing encrypted file on the WebDAV share folder, the file remains encrypted.

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:
http://support.microsoft.com/contactus/?ws=support
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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply the Windows XP-based hotfix you must have Windows XP SP2 or Windows XP SP3 installed on the computer. To apply the Windows Vista-based hotfix, you must have Windows Vista Service Pack 1 installed on the computer. To apply the Windows Server 2008-based hotfix, you must be running Windows Server 2008 on the computer.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

After you apply this hotfix, you have to enable it. To have us enable the hotfix for you, go to the "Fix it for me" section. If you would rather do this yourself, go to the "Let me fix it myself" section.

Fix it for me

To enable this hotfix automatically, click the Fix this problem link. Then click Run in the File Download dialog box, and follow the steps in this wizard.

Fix this problem
Microsoft Fix it 50037


Note This wizard may be in English only; however, the automatic fix also works for other language versions of Windows.

Note If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it on the computer that has the problem.

Now go to the "Did this fix the problem?" section.

Let me fix it myself

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To enable this hotfix, follow these steps:
  1. Click Start, click Run, type Regedit, and then press ENTER.
  2. Locate and then click the following registry subkey:
    HKLM\SYSTEM\CurrentControlSet\Services\MrxDAV\Parameters\
  3. On the Edit menu, point to New, and then click DWORD Value.
  4. Type DisableEFSOnWebDav to name the entry. Then, press ENTER.
  5. On the Edit menu, click Modify, type 1, and then click OK.
  6. Exit Registry Editor.

Did this fix the problem?

Check whether the problem is fixed. If it is fixed, you are finished with this article. If it is not fixed, you can contact support.

File information

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 item in Control Panel.Windows XP SP2, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mrxdav.sys5.1.2600.3484179,96825-Nov-200811:50x86
Windows XP SP3, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mrxdav.sys5.1.2600.5716180,09625-Nov-200811:42x86
Windows Vista and Windows Server 2008 file information notes
The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately . MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Davclnt.dll6.0.6000.2101554,27219-Feb-200904:10x86
Davclnt.dll6.0.6001.2238155,29619-Feb-200904:17x86
Mrxdav.sys6.0.6000.21015113,66419-Feb-200901:44x86
Mrxdav.sys6.0.6001.22381113,66419-Feb-200901:43x86
Webclnt.dll6.0.6000.21015197,63219-Feb-200904:13x86
Webclnt.dll6.0.6001.22381198,65619-Feb-200904:22x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Davclnt.dll6.0.6000.2101572,70419-Feb-200904:20x64
Davclnt.dll6.0.6001.2238173,72819-Feb-200904:49x64
Mrxdav.sys6.0.6000.21015138,24019-Feb-200901:58x64
Mrxdav.sys6.0.6001.22381138,24019-Feb-200902:18x64
Webclnt.dll6.0.6000.21015215,04019-Feb-200904:24x64
Webclnt.dll6.0.6001.22381216,57619-Feb-200904:53x64
Mrxdav.sys6.0.6001.22381113,66419-Feb-200901:43x86
Davclnt.dll6.0.6000.2101554,27219-Feb-200904:10x86
Davclnt.dll6.0.6001.2238155,29619-Feb-200904:17x86
Webclnt.dll6.0.6000.21015197,63219-Feb-200904:13x86
Webclnt.dll6.0.6001.22381198,65619-Feb-200904:22x86

This hotfix is scheduled to be included with Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2.

STATUS

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, 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

Additional file information for Windows Server 2008 and for Windows Vista

Collapse this tableExpand this table
File namePackage_1_for_kb959439~31bf3856ad364e35~x86~~6.0.1.0.mum
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Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
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File versionNot Applicable
File size2,228
Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
File namePackage_4_for_kb959439~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size2,228
Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
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File versionNot Applicable
File size1,408
Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
File namePackage_for_kb959439_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,641
Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
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Date (UTC)19-Feb-2009
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File nameX86_03a4d4f78b5b7da9d765cac000f86b5b_31bf3856ad364e35_6.0.6001.22381_none_fdd9bf3c9318dd13.manifest
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File versionNot Applicable
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
File nameX86_63287ab1f96f9099899092a5a3071fcf_31bf3856ad364e35_6.0.6001.22381_none_0fe06c4ebfec8cf8.manifest
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Date (UTC)19-Feb-2009
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File nameX86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22381_none_5559eb3dcd0f3678.manifest
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Additional files for all supported x86-based versions of Windows Server 2008 and of Windows Vista
Additional files for all supported x64-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameAmd64_5c6f781feef63db94748e06971ead975_31bf3856ad364e35_6.0.6000.21015_none_36cba3121c49ac5a.manifest
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
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Date (UTC)19-Feb-2009
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
File namePackage_for_kb959439_client_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
File namePackage_for_kb959439_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
File namePackage_for_kb959439_client~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
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Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
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File versionNot Applicable
File size1,416
Date (UTC)19-Feb-2009
Time (UTC)18:08
PlatformNot Applicable
File namePackage_for_kb959439_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,438
Date (UTC)19-Feb-2009
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PlatformNot Applicable
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Date (UTC)19-Feb-2009
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PlatformNot Applicable
File nameX86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.21015_none_53c33555cfac7a8e.manifest
File versionNot Applicable
File size6,904
Date (UTC)19-Feb-2009
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PlatformNot Applicable
File nameX86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22381_none_5559eb3dcd0f3678.manifest
File versionNot Applicable
File size6,904
Date (UTC)19-Feb-2009
Time (UTC)04:50
PlatformNot Applicable

Properties

Article ID: 959439 - Last Review: October 8, 2011 - Revision: 6.0
APPLIES TO
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
Keywords: 
kbfixme kbmsifixme kbautohotfix kbexpertiseadvanced kbfix kbsurveynew kbqfe KB959439

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