By default FastCGI module is disabled in IIS installation. Follow the following steps to learn how to enable FastCGI support in IIS 7.5
Configure IIS for PHP and enable FastCGI
- Click on start menu.
- Open control panel.
- Click on Programs.
- Click on Turn Windows feature on or off.
- In the Windows Features dialog expand Internet Information Services, World Wide Web Services, Application Development Features and then enable the CGI checkbox.
- Click OK and wait until the installation is complete.
You must also read Php Installation on Windows| How to configure PHP in IIS step by step to learn complete Php installtion in IIS on windows.