[SOLVED] HTTP Error 500.0 - Internal Server Error An unknown FastCGI error occured

HTTP Error 500.0 - Internal Server Error An unknown FastCGI error occured

I'm running IIS7 on Windows Server 2008 with Plesk 10. I have website under plesk and a site not under plesk and only on IIS. The website under plesk successfully runs php files but the other website gives error:

HTTP Error 500.0 - Internal Server
Error An unknown FastCGI error occured

Module FastCgiModule
Notification ExecuteRequestHandler
Handler PHP5-FastCGI-php
Error Code 0x8007010b
Requested URL http://*.com:80/test.php Physical
Path C:\IIS*.com\test.php
Logon Method Anonymous
Logon User Anonymous

PHP5-FastCGI-php is configured exactly like the site under plesk. php-cgi.exe is located at C:\Program Files (x86)\Parallels\Plesk\Additional\PleskPHP5\

EDIT: Here is my php.ini but I don't get any errors.

error_reporting = E_ALL & ~E_NOTICE
display_errors = On
display_startup_errors = Off
log_errors = On
error_log = "C:\Program Files (x86)\...\log\test.log"
error_log = syslog

Solution

Granted Read & execute, List folder contents for Everyone on folder

C:\Program Files (x86)\Parallels\Plesk\Additional\PleskPHP5

and now php is up and running for every Application Pool. The main problem with plesk was, only sites running with Application Pool Identity of a user which is member of psacln.