This article was previously published under Q294266
If you use ServerXMLHTTP to request a page from a server that requires client certificates, the request may not succeed, and you may receive the following error message:
A certificate is required to complete client authentication
Also, if the object makes a request by using one protocol (such as HTTP), and the requested page on the server redirects the output to another page by using a different protocol (such as HTTPS), the call may also fail and you may receive one of the following error messages:
A redirect request will change a non-secure to a secure connection
A redirect request will change a secure to a non-secure connection
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
This bug was corrected in Microsoft XML 3.0 Service Pack 1.
For additional information on other fixes included in Microsoft XML 3.0 Service Pack 1, click the article number below to view the article in the Microsoft Knowledge Base:
292935 INFO: List of Issues Fixed in Microsoft XML 3.0 Service Pack 1
For the latest information and downloads of MSXML, refer to the following MSDN Web site at: