Microsoft KB Archive/184031

= Proxy/IIS Errors: Web Site IP Addresses Are Misconfigured =

Article ID: 184031

Article Last Modified on 6/23/2005

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APPLIES TO


 * Microsoft Internet Information Server 4.0
 * Microsoft Proxy Server 2.0 Standard Edition

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This article was previously published under Q184031



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SUMMARY


SYMPTOMS
When you access an Internet site through a Proxy Server that is installed on a Microsoft Internet Information Server 4.0 computer, you may receive the following error(s):

Internet Explorer cannot open the Internet Site 

A connection with the server could not be established

11001 Host not found

Unable to form connection to the server.

The path c:\\w3proxy.dll failed to load

The data is the error

Error 14



CAUSE
In Internet Explorer 4.0, the error message, "Internet Explorer cannot open the Internet Site ," can occur when a connection with the server could not be established.

In Internet Explorer 3.0x, the error message, "Internet Explorer cannot open http:// ," may be due to the properties of the default Web site in the Microsoft Management Console (MMC) having the IP Address field set to an IP address on the external NIC (or Dial-up Connection). This seems to occur only when there is just one Web site (the default Web site, not including the administration Web site).

The error message, "11001 Host not found," may be due to the properties of the default Web site in the Microsoft Management Console (MMC) having the IP Address field set to an IP address on the internal NIC. Again, this seems to occur only when there is just one Web site (the default Web site, not including the administration Web site). This error message can also occur when the Auto Dial shared service of the Proxy Server in the IIS Console is not set correctly.



RESOLUTION
To resolve this problem:

Open the Default Web Site Properties and change the IP Address field to All Unassigned.

-AND/OR-

Edit the Default Web Site properties. Click the Advanced button on the Web Site tab. Click the Add button in the "Multiple identities for this Web Site" section and remove the Host Header Name entry.

If necessary, create a new site that will host the content that you wish to publish on the internet or intranet. Assign an external or internal IP address to this new Web site. Remember to stop and restart the browser after making this change.

Make sure that the settings to Enable Dialing for the Winsock and Web Proxys also check the Credentials. Verify that these are correct and line up with the DUN.

Keywords: kbprb KB184031

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