When use the Certificate Import Wizard to try to install a certificate on a Windows Vista-based computer, the Rundll32.exe process may crash

On a Windows Vista-based computer, you use the Certificate Import Wizard to try to install a certificate. To do this, you double-click the certificate file, and then you click Install Certificate. During the installation, the Rundll32.exe process may crash.

This problem occurs if a third-party cryptographic service provider (CSP) is installed on the computer.
This issue occurs because of an access violation in the Rundll32.exe process. The access violation occurs because the CertEnroll.dll file is already unloaded when the installation process calls the CertEnroll.dll file.

Service pack information

To 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:
935791 How to obtain the latest Windows Vista service pack

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: 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.

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

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, 32-bit versions
File nameFile versionFile sizeDateTimePlatform
Update.mumNot Applicable2,00621-Sep-200717:48Not Applicable
X86_f8362b0c0ac14730200ef8d9d187a8dc_31bf3856ad364e35_6.0.6000.20684_none_5791f4cfcd1f912e.manifestNot Applicable69921-Sep-200717:48Not Applicable
X86_microsoft-windows-cryptui-dll_31bf3856ad364e35_6.0.6000.20684_none_843f3965b457a9ad.manifestNot Applicable10,02221-Sep-200717:48Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_c4e395cf5d542b48e3a9977de01b2442_31bf3856ad364e35_6.0.6000.20684_none_d932a1205a613836.manifestNot Applicable70321-Sep-200717:48Not Applicable
Amd64_f8362b0c0ac14730200ef8d9d187a8dc_31bf3856ad364e35_6.0.6000.20684_none_b3b09053857d0264.manifestNot Applicable70121-Sep-200717:48Not Applicable
Amd64_microsoft-windows-cryptui-dll_31bf3856ad364e35_6.0.6000.20684_none_e05dd4e96cb51ae3.manifestNot Applicable10,39521-Sep-200718:40Not Applicable
Package_1_for_kb940810~31bf3856ad364e35~amd64~~ Applicable1,79821-Sep-200717:48Not Applicable
Package_2_for_kb940810~31bf3856ad364e35~amd64~~ Applicable2,01721-Sep-200717:48Not Applicable
Update.mumNot Applicable1,92521-Sep-200717:48Not Applicable
To work around this problem, run the Certificate Microsoft Management Console (MMC) snap-in tool (Certmgr.msc) to import the certificate that you want to install.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
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

Article ID: 940810 - Last Review: 10/08/2011 15:24:00 - Revision: 3.0

Windows Vista Enterprise 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 Premium, Windows Vista Ultimate

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