- A client computer tries to connect to a Web site through a Microsoft Internet Security and Acceleration (ISA) Server 2006 or a Microsoft Internet Security and Acceleration (ISA) Server 2004 Web proxy server.
- ISA Server is configured to request user authentication from client computers.
- The client computer uses the HTTP 1.0 protocol to send connection requests to ISA Server.
Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.