IIS Binds To All Available IP Addresses When It Starts

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Article ID: 259349
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Symptoms

When you start Internet Information Services (IIS) 5.0, IIS appears to bind to all Internet Protocol (IP) addresses on a server, not just the IP addresses that are assigned to Web sites. In addition, when you run another service that uses port 80 on an unused IP address, IIS may return an error.

Cause

To enhance performance, IIS 5.0 uses "socket pooling", in which IIS binds to all IP addresses when it starts.

Workaround

To work around this behavior, disable socket pooling in IIS as follows:
  1. At a command prompt, switch to the "C:\InetPub\AdminScripts" folder.
  2. Type the following command:
    CSCRIPT ADSUTIL.VBS SET W3SVC/DisableSocketPooling TRUE

More information

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
238131 How to Disable Socket Pooling

Properties

Article ID: 259349 - Last Review: June 19, 2014 - Revision: 3.0
Keywords: 
kbpending kbprb KB259349
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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