When you use the Encrypting File System (EFS) to encrypt files, some files are not fully encrypted in Windows Vista or in Windows Server 2008

Article ID: 963046 – Last Review: March 2, 2009 – Revision: 1.0

When you use the Encrypting File System (EFS) to encrypt files, some files are not fully encrypted in Windows Vista or in Windows Server 2008

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SYMPTOMS

Assume that you use the Encrypting File System (EFS) to encrypt files in Windows Vista or in Windows Server 2008. After the encryption process is complete, you can retrieve the EFS0.tmp temporary file by using a file restoration tool. This file is in clear text format and is not encrypted.

CAUSE

When EFS encrypts a file, EFS creates a backup copy of the file, and this file is named EFS0.tmp. EFS does this to prevent accidental data loss during the file encryption process. After the encryption process is complete, the backup copy is deleted. However, because file deletion does not zero out the data in storage, you may retrieve the encrypted data in plain text format by using certain file restoration tools.

RESOLUTION

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. 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:

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

Prerequisites

To apply this hotfix, you must have Windows Vista Service Pack 1 or Windows Server 2008 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

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 Vista and Windows Server 2008 file information note

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 Vista and of Windows Server 2008
Collapse this tableExpand this table
File name File version File size Date Time Platform
Ksecdd.sys 6.0.6001.22202 441,400 30-Jan-2009 00:29 x86
Lsasrv.dll 6.0.6001.22368 1,256,960 04-Feb-2009 05:28 x86
Lsasrv.mof Not Applicable 13,780 18-Dec-2007 21:23 Not Applicable
Lsass.exe 6.0.6001.22368 9,728 04-Feb-2009 05:28 x86
Secur32.dll 6.0.6001.22368 72,704 04-Feb-2009 05:28 x86
For all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File name File version File size Date Time Platform
Ksecdd.sys 6.0.6001.22202 516,152 30-Jan-2009 00:29 x64
Lsasrv.dll 6.0.6001.22368 1,693,696 04-Feb-2009 06:08 x64
Lsasrv.mof Not Applicable 13,780 18-Dec-2007 21:23 Not Applicable
Lsass.exe 6.0.6001.22368 11,264 04-Feb-2009 06:02 x64
Secur32.dll 6.0.6001.22368 94,208 04-Feb-2009 06:09 x64
Lsasrv.mof Not Applicable 13,780 18-Dec-2007 21:23 Not Applicable
Secur32.dll 6.0.6001.22368 76,800 04-Feb-2009 05:27 x86
For all supported Itanium-based versions of Windows Server 2008
Collapse this tableExpand this table
File name File version File size Date Time Platform
Ksecdd.sys 6.0.6001.22207 1,025,592 29-Jan-2009 23:29 IA-64
Lsasrv.dll 6.0.6001.22368 3,245,568 04-Feb-2009 04:41 IA-64
Lsasrv.mof Not Applicable 13,780 18-Dec-2007 21:23 Not Applicable
Lsass.exe 6.0.6001.22368 17,920 04-Feb-2009 04:39 IA-64
Secur32.dll 6.0.6001.22368 202,752 04-Feb-2009 04:41 IA-64
Lsasrv.mof Not Applicable 13,780 18-Dec-2007 21:23 Not Applicable
Secur32.dll 6.0.6001.22368 76,800 04-Feb-2009 05:27 x86

WORKAROUND

To work around this problem, use the Cipher utility to prevent any unauthorized data recovery.

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

814599  (/Feedback.aspx?kbNumber=814599/ ) How to use Cipher.exe to overwrite deleted data in Windows Server 2003

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 about EFS, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/library/cc700811.aspx (http://technet.microsoft.com/en-us/library/cc700811.aspx)

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

824684   (/Feedback.aspx?kbNumber=824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File name Package_for_kb963046_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,367
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_client~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,431
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,421
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,423
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,425
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,431
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,422
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum
File version Not Applicable
File size 1,429
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name X86_b7578aea6fa02abaec076060b61ff82d_31bf3856ad364e35_6.0.6001.22368_none_4f2191524137be90.manifest
File version Not Applicable
File size 691
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name X86_microsoft-windows-lsa_31bf3856ad364e35_6.0.6001.22368_none_a69b4e21761244ac.manifest
File version Not Applicable
File size 34,373
Date (UTC) 04-Feb-2009
Time (UTC) 07:09
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File name Amd64_5b266188de718372ed513f16a387c5dc_31bf3856ad364e35_6.0.6001.22368_none_8683f80f1a576351.manifest
File version Not Applicable
File size 695
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Amd64_68283f03523ed7a8ce076a9646896940_31bf3856ad364e35_6.0.6001.22368_none_031d076950999cab.manifest
File version Not Applicable
File size 1,032
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Amd64_microsoft-windows-lsa_31bf3856ad364e35_6.0.6001.22368_none_02b9e9a52e6fb5e2.manifest
File version Not Applicable
File size 34,461
Date (UTC) 04-Feb-2009
Time (UTC) 07:40
File name Package_1_for_kb963046~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,781
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_2_for_kb963046~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 2,161
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_3_for_kb963046~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,997
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_4_for_kb963046~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,997
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,375
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_client~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,439
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,429
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,431
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,433
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,439
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,430
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum
File version Not Applicable
File size 1,437
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.0.6001.22368_none_0d0e93f762d077dd.manifest
File version Not Applicable
File size 21,959
Date (UTC) 04-Feb-2009
Time (UTC) 06:33
Additional files for all supported Itanium-based versions of Windows Server 2008
Collapse this tableExpand this table
File name Ia64_90c66b56cf0cc8e398fd80504da8d7d9_31bf3856ad364e35_6.0.6001.22368_none_e4a71a9c7e37bebc.manifest
File version Not Applicable
File size 693
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Ia64_db632b9a297fb5317505f8e8e29bd771_31bf3856ad364e35_6.0.6001.22368_none_12e2403e6c092a4e.manifest
File version Not Applicable
File size 1,030
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Ia64_microsoft-windows-lsa_31bf3856ad364e35_6.0.6001.22368_none_a69cf21776104da8.manifest
File version Not Applicable
File size 34,398
Date (UTC) 04-Feb-2009
Time (UTC) 05:20
File name Package_for_kb963046_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,425
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,426
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,429
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_server~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,434
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,426
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Package_for_kb963046_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum
File version Not Applicable
File size 1,433
Date (UTC) 04-Feb-2009
Time (UTC) 23:19
File name Wow64_microsoft-windows-lsa_31bf3856ad364e35_6.0.6001.22368_none_0d0e93f762d077dd.manifest
File version Not Applicable
File size 21,959
Date (UTC) 04-Feb-2009
Time (UTC) 06:33

APPLIES TO
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Standard without Hyper-V
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
  • 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
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
Keywords: 
kbautohotfix kbexpertisebeginner kbfix kbsurveynew kbqfe kbhotfixserver KB963046

 

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