Webmail and websites that use FastCGI are not accessible: PHP files are being downloaded or 403 Forbidden error is displayed

Symptoms

• Websites that use FastCGI application are not accessible in a web browser: PHP files are downloaded instead of displayed.

• Roundcube webmail shows a blank page, Apache default page or "403 Forbidden" error message:

  PLESK_INFO: Forbidden
  You don't have permission to access this resource.

• One of the following error messages is logged in Apache error log:

  • on CentOS/RHEL-based distributions

    /var/log/httpd/error_log

  • on Debian/Ubuntu-based distributions

    /var/log/apache2/error.log

  AH01630: client denied by server configuration: /usr/share/psa-roundcube/favicon.ico, referer:

  PHP Warning: file_put_contents(/usr/share/errors): failed to open stream: Permission denied in /usr/share/psa-roundcube/program/lib/Roundcube/rcube.php on line 1259
  PHP Warning: Configuration error. Unsupported database driver: in /usr/share/psa-roundcube/program/lib/Roundcube/rcube.php on line 136

Cause

fcgid module is disabled in Apache configuration.

Resolution