This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows registry
After you apply the MS04-011 security update to a computer that is running Microsoft Windows 2000 Server and Microsoft Internet Information Services (IIS) 5.0, you may receive the following error message after you select a certificate:
403.13 Client Certificate Revoked
You may receive this error message if mutual authentication is enabled.
This problem occurs because of a certificate revocation list (CRL) retrieval timeout. MS04-011 introduces new Crypto API (CAPI) behavior with respect to network timeouts. This change was first made to address the problem of CAPI blocking for a long time during CRL retrievals when the target URL is inaccessible. The default time for Windows 2000 Server and MS04-011 is set to 15 seconds, and Windows 2000 Server and MS04-011 include a feature that retries the download on a background thread with a default timeout of 60 seconds. CRLs that reside on a Lightweight Directory Access Protocol (LDAP) URL may be particularly affected because of their lower throughput.
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Windows 2000 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
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.
Note If services must retrieve a CRL, you must restart the computer. For example, LSASS must retrieve a CRL to verify smart card logon. If you do not restart the computer, these types of services do not recognize the registry change.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
After you apply this hotfix, you can configure the following URL retrieval time-out values:
Name: ChainUrlRetrievalTimeoutMilliseconds Type: REG_DWORD Value: This value is the time-out in milliseconds. If this value is set to 0 or does not exist, a default value of 15000 milliseconds is used.
ChainUrlRetrievalTimeoutMilliseconds is the default URL time-out for authority information access (AIA) retrievals and for non-accumulative CRL retrievals.
Name: ChainRevAccumulativeUrlRetrievalTimeoutMilliseconds : Type: REG_DWORD Values: This value is the time-out in milliseconds. If this value is set to 0 or does not exist, a default value of 20000 milliseconds is used.
ChainRevAccumulativeUrlRetrievalTimeoutMilliseconds is the default revocation accumulative URL time-out. The first revocation URL retrieval uses half of this time-out.
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
841641 IIS returns a "403.13 Client Certificate Revoked" error message after you install MS04-011 because of Wininet proxy settings
841642 Errors with client certificates occur after you install the MS04-011 security update on an IIS 5.0 computer