Article ID: 123742, created on Dec 1, 2014, last review on Dec 1, 2014

  • Applies to:
  • Plesk for Windows


Parallels Plesk displays the following error:

HTTP Error 500.0 - Internal Server Error
An unknown FastCGI error occured
Detailed Error Information
Module  FastCgiModule
Notification    ExecuteRequestHandler
Handler PleskEngine-FastCGI-php


Plesk website is misconfigured.


  1. Remove Plesk site from IIS at IIS > Sites > PleskControlPanel.

  2. Reconfigure the Plesk Services at Start > Plesk Reconfigurator > Repair Plesk installation > choose Plesk Services > Check.

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