Sites running PHP 5.6 are not working: No input file specified

Symptoms

• Browsing website running PHP 5.6 fails with following error message:

  CONFIG_TEXT: No input file specified.

• Same error is shown accessing PHP info file http://example.com/phpinfo.php with following content:

  CONFIG_TEXT: <?php
  phpinfo();
  ?>

• Executing manually PHP file from a Command Prompt opened as an Administrator works correctly:

  C:\> "%plesk_dir%\Additional\PleskPHP56\php-cgi.exe" "C:\InetPub\vhosts\example.com\httpdocs\phpinfo.php"

• Directory C:\InetPub\vhosts is mapped into a new drive.
  Opening C:\InetPub\ folder path in Windows exporer > Right click on vhosts directory > Properties and folder type will be shown as a Mounted Volume:
  

  

• Access Denied errors are shown in php.exe processes with ProcMon utility, setting following filters:

  ​

Cause

Incorrect permissions on Plesk vhosts directory C:\InetPub\vhosts in a mounted volume.

Resolution

1. Connect via RDP
2. Open C:\InetPub\ path in Windows explorer
3. Right click on vhosts directory, then Properties > Security > Advanced, and be sure that the permissions for C:\InetPub\vhosts directory are set as follows:

   

4. Open C:\InetPub\ path in Windows explorer
5. Right click on vhosts directory > Properties > Properties (next to Mounted Volume type) > Security > Advanced, and be sure that the permissions for mounted volume are set as follows: