Plesk shows 500 Internal Server Error: The FastCGI process exited unexpectedly

Applicable to:

• Plesk 12.5 for Windows

Symptoms

• It is not possible to login Plesk after upgrade: "HTTP Error 500.0 - Internal Server Error"

  CONFIG_TEXT: HTTP Error 500.0 - Internal Server Error
  C:\Program Files\Parallels\Plesk\Additional\PleskPHP54\php-cgi.exe - The FastCGI process exited unexpectedly
  Detailed Error Information:
  Module FastCgiModule
  Notification ExecuteRequestHandler
  Handler PleskEngine-FastCGI-php
  Error Code 0xffffffffRequested URL https://localhost:8443/index.php
  Physical Path C:\Program Files (x86)\Plesk\admin\htdocs\index.php

Cause

The root cause of the issue is that PHP package for Plesk is not upgraded.

Resolution

1. Connect to the server via RDP.

2. Download from autoinstall-win.plesk.com and unpack plesk-engine.msi , plesk-service-node-utilities.msi packages as follows:

   C:\> msiexec /a path_to_package\plesk-engine.msi TARGETDIR=C:\temp\ /qnmsiexec /a path_to_package\plesk-service-node-utilities.msi TARGETDIR=C:\temp\ /qn

3. Create a backup of %plesk_bin% directory.

4. Replace not upgraded binaries with unpacked ones in %plesk_bin% directory.

   C:\> cd %plesk_bin%
   copy "C:\temp\Program Files\Parallels\Plesk\admin\bin\php.exe"
   copy "C:\temp\Program Files\Parallels\Plesk\admin\bin\php.dll"
   copy "C:\temp\Program Files\Parallels\Plesk\admin\bin\php-cgi.exe"
   copy "C:\temp\Program Files\Parallels\Plesk\admin\bin\phpcfg.exe"

5. Restart Plesk Management Service.