This article was previously published under Q246582
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When you are running Internet Explorer through Microsoft Proxy Server and you are using challenge/response (NTLM) authentication, users may encounter multiple proxy authentication prompts when they are attempting to use Internet Web sites that are configured to use DistributedPassword Authentication (DPA) authentication. There are no problems connecting to the Web sites if the proxy server is bypassed.
To resolve this problem, obtain the latest service pack for Internet Explorer version 5.01. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
267954 How to Obtain the Latest Internet Explorer 5.01 Service Pack
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Internet Explorer version 5.01 Service Pack 1.
Microsoft Internet Explorer 5.01, Microsoft Internet Explorer 5.0, Microsoft Internet Explorer 5.01, Microsoft Internet Explorer 5.01, Microsoft Internet Explorer 5.0, Microsoft Internet Explorer 5.01, Microsoft Internet Explorer 5.0