DOCUMENT:Q258546 02-APR-2000 [iis] TITLE :Cannot Retrieve Default Web Site from External Network PRODUCT :Internet Information Server PROD/VER:winnt:2.0,4.0,5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server versions 4.0, 5.0 - Microsoft Proxy Server version 2.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you install Microsoft Proxy Server on a Web server, the Default Web Site cannot be retrieved by default from the external network even though the All Unassigned option is selected in the properties for the Default Web Site. The following error messages may occur: 10053 Software caused connection to abort Internet Explorer cannot open the Internet site http:///. The server returned an invalid or unrecognized response Any other Web site that uses the All Unassigned option or specifies an IP address can be viewed on the outside network. CAUSE ===== This behavior occurs because the W3proxy.dll file is running as an ISAPI extension in the Default Web Site. The W3proxy.dll file filters out the requests, and rejects all incoming connections. It only accepts the incoming connections after the Enable Web Publishing setting is selected. Any other Web site that does not contain the W3proxy.dll file as an ISAPI extension is not bound by the Enable Web Publishing setting of Web Proxy. Web Proxy only runs on the Default Web Site. This behavior is by design for Proxy Server 2.0. Also, the Default Web Site should not be changed. In other words, do not change the IP addressing, Default Web Site name, or the local path. General practice is not to change it at all; however, you can add virtual directories to the Default Web Site. WORKAROUND ========== Select the Enable Web Publishing setting in Web Proxy and send all requests to the local server. Additional query words: ====================================================================== Keywords : Technology : kbiisSearch kbAudDeveloper kbiis500 kbiis400 kbProxyServSearch kbProxyServ200 Version : winnt:2.0,4.0,5.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.