After installing PHP on your IIS, you might be stuck with the following error :
“Http Error 500.0 FastCGI process exited unexpectedly. ”
This error occurs when the Visual C++ Redistributable file to handle CGI process is not present in the system.
To resolve this issue you just need to install proper VC++ redistributable file.
So if you are facing this issue, and if the system does not have proper VC++ version, then just install the version of VC++ supported by the PHP version installed on your system to resolve this error.
List of PHP versions and the VC++ versions supported by it:
| PHP version | MVC version | Supported VC++ version |
|---|---|---|
| PHP 7.0 | VC 14 Build | VC ++ 2015 |
| PHP 5.6 | VC 11 Build | VC ++ 2012 / update4 |
| PHP 5.5 | VC 11 Build | VC ++ 2012 / update4 |
| PHP 5.3 | VC 9 Build | VC ++ 2008 |
So happy troubleshooting folks . 😉