Article ID: 937063 - View products that this article applies to.
Consider the following scenario:
Then, the system automatically restarts.
Windows has encountered a critical problem and will restart automatically in one minute. Please save your work now.
This problem occurs because an error in EFS causes the Lsass.exe process to exit unexpectedly.
If you try to encrypt files or to decrypt files by using EFS, and if the EFS certificate is stored in a smart card, EFS obtains the certificate from the smart card by using the CSP. To obtain the certificate, the CSP uses some fields in the CRYPT_KEY_PROV_INFO structure. However, EFS has not initialized all the fields in the CRYPT_KEY_PROV_INFO structure.
When the CSP tries to retrieve the uninitialized fields, an access violation occurs. This access violation causes the Lsass.exe process to exit. Then, the system restarts automatically when the system detects that the Lsass.exe process is not running.
Service pack informationTo resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/935791/ )How to obtain the latest Windows Vista service pack
Hotfix informationA 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=supportNote 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.
PrerequisitesThere are no prerequisites for installing this hotfix.
Restart requirementYou must restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe 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, 32-bit versions
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Windows Vista, 64-bit versions
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the CRYPT_KEY_PROV_INFO structure, visit the following Microsoft Developer Network (MSDN) Web site:
http://msdn2.microsoft.com/en-us/library/aa924673.aspxFor more information about third-party certification authority support for EFS, click the following article number to view the article in the Microsoft Knowledge Base:
273856For more information about smart cards, visit the following Microsoft TechNet Web site:
(http://support.microsoft.com/kb/273856/ )Third-party certification authority support for Encrypting File System
http://technet.microsoft.com/en-us/library/dd277362.aspxFor more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/LN/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 937063 - Last Review: October 8, 2011 - Revision: 4.0
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