If you received a HTTP 500.21 error in the browser – “Handler “PHP53_via_FastCGI” has a bad module “FastCgiModule” in its module list”. when browsing a PHP site on Windows 7 desktop to use PHP on IIS
Just follow these steps to fix it –
1.Open up your Control Panel and go to the Programs section and choose “Turn Windows features on or off”.
2.Under Internet Information Services, select World Wide Web Services, then Application Development Features and check the box for CGI.
3.Click OK and install.
4. Load up your PHP webpage!
It’s that easy! Good luck to everyone with their Windows based PHP development.