Web Site binding is already in use

Summary

Internet Information Services (IIS) Web sites that use HTTP rely on several important IIS components for their availability. The Windows Process Activation Service (WAS), the World Wide Publishing Service (W3SVC), the HTTP service, all must be running correctly. In addition, a properly running application pool must be available for the Web site’s applications. If any of these components is not functioning, the Web site will not be available.

Resolutions

Remove a duplicate binding

Web sites that have duplicate URL bindings will cause one of the Web sites to be disabled. Make sure that you do not try to register duplicate application URLs in the ApplicationHost.config or Web.config files. To resolve the duplication, determine which sites are using the same bindings. Then, modify the bindings as needed, and restart the site. You can do this by following the steps in A, B, and C.

A. Determine which sites are using the same bindings

To determine which sites are using the same bindings:

• Click Start, click Control Panel, and then click Administrative Tools.

• Right-click Internet Information Services (IIS) Manager and select Run as administrator.

• In the IIS Manager Connections pane, expand the computer name.

• Left-click the Sites folder. A list of the Web sites on the server appears on the right in Features View. The binding for each site is listed in the Binding column.

• Review the list of bindings and look for sites that have the same binding properties set. For example, look for two sites that both have a binding of *:80 (http).

B. Remove the duplicate binding

To remove the duplicate binding:

• In IIS Manager, in the Connections pane, select the Web site that you have to configure.

• In the Actions pane, click Bindings...

• To modify an existing binding, select the binding and click Edit.

• To add a new binding, click Add...

• After you have set the unique bindings for the site, click OK, then click Close.

C. Restart the Web site

To restart the Web site:

• In IIS Manger, in the Connections pane, select the Web site that you have to start.

• In the Actions pane, click Stop to stop the site.

• In the Actions pane, click Start to start the site.

You can also do this using the links below:

Stop Web Site

Start Web Site