FastCGI Error when installing PHP on IIS7.5

Question

I'm trying to install MediaWiki on a Win2008r2 server, but can't manage to install PHP. Here's what I did:

• Grabbed a Zip archive of PHP and unzipped it into C:\PHP.
• Created two subdirs: c:\PHP\sessiondata and c:\PHP\uploadtemp.
• Granted modify rights to the IUSR account for the subdirs.
• Copied php.ini-production as php.ini
• Edited php.ini and made the following changes:

fastcgi.impersonate = 1
cgi.fix_pathinfo = 1
cgi.force_redirect = 0
open_basedir = "c:\inetpub\wwwroot;c:\PHP\uploadtemp;C:\PHP\sessiondata"
extension = php_mysql.dll
extension_dir = "./ext"
upload_tmp_dir = C:\PHP\uploadtemp
session.save_path = C:\php\sessiondata

• Install Web server role, selected CGI and HTTP Redirection options.

• In the Handler Mappings:

  • Added Module Mapping. Entered the following values:
  • Path = *.php, Module = FastCgiModule, Executable = c:\php\php-cgi.exe, Name = PHP via FastCGI.

• Created a test page into wwwroot directory: phpinfo.php and set the contents like this:
  < ?php phpinfo(); ?>

• Browsed to http://localhost/phpinfo.php

But then I get:

HTTP Error 500.0 - Internal Server Error
An unknown FastCGI error occured
    Detailed Error Information
Module: FastCgiModule 
Notification: ExecuteRequestHandler 
Handler: PHP via FastCGI 
Error Code: 0x800736b1 

Requested URL: http://localhost:80/phpinfo.php
Physical Path: C:\inetpub\wwwroot\phpinfo.php 
Logon Method: Anonymous 
Logon User: Anonymous 

Does anyone know what I'm doing wrong here? Thanks.

Solution

This is caused by the lack of the VC9 runtime on your machine. You will need to install VC9 runtime from here.

Comments

[Chris]

This helped me. Before, I checked if VS was installed. And it was. Still installing VC9 again helped solve the problem that I had which was Error 500 "An unknown FastCGI error occured" with error code 0x800736b1.