Change an Application Pool for an Application (IIS 7)

Applies To: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista

You can assign several applications to the same application pool if all the applications use the same configuration settings. For example, applications that use the same worker process recycling settings or ASP.NET version can run in the same application pool. However, if you have an application that must run with unique settings, you should create a separate application pool for that application.


For information about the levels at which you can perform this procedure, and the modules, handlers, and permissions that are required to perform this procedure, see Application Pools Feature Requirements (IIS 7).

Exceptions to Feature Requirements

  • None

To change an application pool for an application

You can perform this procedure by using the user interface (UI), by running Appcmd.exe commands in a command-line window, by editing configuration files directly, or by writing WMI scripts.

User Interface

To use the UI

  1. Open IIS Manager. For information about opening IIS Manager, see Open IIS Manager (IIS 7).

  2. In the Connections pane, expand the server node and click Application Pools.

  3. On the Application Pools page, select the application pool that contains the application that you want to change.

  4. In the Actions pane, click View Applications.

  5. Select the application whose application pool you want to change and then click Change Application Pool in the Actions pane.

  6. In the Select Application Pool dialog box, select an application pool from the Application pool list and then click OK.

Command Line

To change the application pool in which an application runs, use the following syntax:

**appcmd set app /**string **/applicationPool:**string

The variable app.namestring is the name of the application that you want to change, and the variable applicationPoolstring is the name of the application pool to which you want to add the application. For example, in a site named contoso, to add an application named deals to an application pool named Marketing, type the following at the command prompt, and then press ENTER:

appcmd set app / /applicationPool:Marketing

For more information about Appcmd.exe, see Appcmd.exe (IIS 7).


The procedure in this topic affects the following configuration elements:

<application> element under <site>

For more information about IISĀ 7 configuration, see IIS 7.0: IIS Settings Schema on MSDN.


Use the following WMI classes, methods, or properties to perform this procedure:

  • Application.ApplicationPool property

For more information about WMI and IIS, see Windows Management Instrumentation (WMI) in IIS 7. For more information about the classes, methods, or properties associated with this procedure, see the IIS WMI Provider Reference on the MSDN site.

See Also


Managing Application Pools in IIS 7