Edit a Handler Mapping (IIS 7)

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

Edit a handler mapping when you have to change the way you set up IIS to process certain file name extensions or directories. For example, if you create a handler mapping for GET requests with a certain file type, you may later want to change the mapping to handle POST requests.


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 Handler Mappings Feature Requirements (IIS 7).

Exceptions to feature requirements

  • None

To edit a handler mapping

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 and navigate to the level you want to manage. For information about opening IIS Manager, see Open IIS Manager (IIS 7). For information about navigating to locations in the UI, see Navigation in IIS Manager (IIS 7).

  2. In Features View, on the server, site, or applicationHome page, double-click Handler Mappings.

  3. In the grid, select a handler mapping.

  4. In the Actions pane, click Edit.

  5. Edit the mapping as needed and click OK.

Command Line

To change a value for a handler mapping, use the following syntax:

**appcmd set config /section:handlers /[name='string'].attribute:**string

The variable name string is the name of the handler mapping that you want to change. The variable attribute is the attribute that you want to edit or add to the handler mapping, and attribute string is the value that you want to set for the attribute.

For example, to configure a handler named ImageCopyrightHandler to run only for requests processed in an application pool that is configured to use the Classic managed request-processing mode, type the following at the command prompt, and then press ENTER:

appcmd set config /section:handlers /[name='ImageCopyrightHandler'].preCondition:classicMode

If you want to add a value to an attribute that is already configured for a handler mapping, you must specify all the values that you want for that attribute when you change the handler mapping. For example, to specify that the handler from the previous example, ImageCopyrightHandler, run only for requests that require .NET Framework version 2.0 in addition to the Classic request-processing mode, type the following at the command prompt, and then press ENTER:

appcmd set config /section:handlers /[name='ImageCopyrightHandler'].preCondition:classicMode,runtimeVersionv2.0

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


The procedure in this topic affects the following configuration elements:


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


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

  • HandlerAction class (IIS)

  • HttpHandlerAction class (ASP.NET)

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


Configuring Handler Mappings in IIS 7