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ISAPI and CGI Restrictions Feature Requirements (IIS 7)

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

This topic describes the requirements for configuring ISAPI and CGI restrictions.

See individual procedures for exceptions to these requirements.


The procedures for configuring extension restrictions can be performed at the following levels in IIS:

  • Web server

Modules and Handlers

The necessary modules and handlers must be installed on the Web server and enabled at the level at which you perform this procedure.

Modules can be enabled only at the Web server, site, and application levels, but handlers can be enabled at all levels.

The following modules are required:

  • CgiModule

  • IsapiModule

The following handlers are required:

  • ISAPI-dll for <extensionRestrictions> configuration element

  • ASPClassic for <asp> configuration element

  • SecurityCertificate for <asp> configuration element

Required Permissions

If you perform procedures in this section by using IIS Manager, you must be a server administrator.

If you perform procedures in this section by using Appcmd.exe, running WMI scripts, or editing configuration files, you must have write access to the target configuration file or files.

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