SYMPTOMS
When a client tries to open a Web page that resides on a Web server that requires a client certificate through Microsoft Internet Security and Acceleration (ISA) Server (Outgoing Web Request), the client receives the following error message:
403.7 Client certificate required
CAUSE
The Web server sends the error message to the client because ISA Server does not send the client certificate to the Web server even if you correctly add a client certificate for this HTTP/HTTPS bridging rule. This problem occurs if you set up an ISA Server routing rule as follows:
- On the Bridging tabs, enable SSL Requests (Establish a secure channel to the site) in the Redirect HTTP Request as frame.
- On the Bridging tabs, click to select the Use a certificate to authenticate to the SSL Web Server check box, and then select a valid client certificate.
- On the Action tabs, enable the redirecting them to a hosted site option.
RESOLUTION
Hotfix information
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, Microsoft recommends that you wait for the next ISA Server 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.
File information
The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------------------
29-Oct-2003 00:02 3.0.1200.303 178,448 Mspadmin.exe
29-Oct-2003 00:02 3.0.1200.303 103,184 Msphlpr.dll
29-Oct-2003 00:01 3.0.1200.303 393,488 W3proxy.exe
29-Oct-2003 00:02 3.0.1200.303 299,280 Wspsrv.exe