Microsoft Knowledge Base Article 813444 contains the following INTRODUCTION:

This article describes how to troubleshoot situations where you cannot connect to SSL Secured (128-Bit) Web sites (https://) by using Microsoft Internet Explorer in Windows XP.

Note Search the Microsoft Knowledge Base for information about your specific issue before you follow these steps. If you are receiving a specific error message or behavior, search the Microsoft Knowledge Base by using the text of the error message and a description of the issue or behavior. To search the Microsoft Knowledge Base, visit the following Microsoft Web site:

http://support.microsoft.com

To troubleshoot situations where you cannot connect to SSL Secured (128-Bit) Web sites by using Internet Explorer, use the following methods in the order that they are presented. After each method, use Internet Explorer to try to connect to a SSL Secured (128-Bit) Web site and determine if the problem is resolved. If you can connect to the SSL Secured (128-Bit) Web site, you do not have to use the following methods. If the problem is not resolved, go to the next method.