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When you access a Web site that is set to require client certificates, you may receive the following HTTP error message, even if you are sure that the client certificate has not been revoked:
403.13 Client Certificate Revoked
Winhttp.dll may prevent the retrieval of the Wininet proxy settings if all the following conditions are true:
The server is configured with Internet Information Services (IIS) services.
The server is running under the Local System account.
The browser (Wininet) proxy settings have been manually configured.
To resolve this problem, you can use the Proxycfg.exe file to manually configure the proxy settings for the computer. For example, run either of the following commands to import from the user's browser settings:
proxycfg.exe -p itgproxy:80
The Proxycfg.exe file is available from the Platform Software Development Kit (SDK).
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
841642 Errors with client certificates occur after you install the MS04-011 security update on an IIS 5.0 computer
841632 You receive a "403.13 client certificate revoked" error message after you install the MS04-11 security update