Plesk upgrade failed: Unable to read Control Panel configuration file

Created:

2016-11-16 13:06:41 UTC

Modified:

2017-05-23 04:35:53 UTC

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Plesk upgrade failed: Unable to read Control Panel configuration file

Applicable to:

  • Plesk 11.5 for Windows
  • Plesk 12.0 for Windows
  • Plesk 12.5 for Windows

Symptoms

The following error is shown during or after Plesk upgrade:

Unable to read Control Panel configuration file: date_default_timezone_get(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Australia/Melbourne' for '10.0/no DST' instead

OR

Failed loading C:\Program Files (x86)\Parallels\Plesk\admin\modules\ioncube_loader_win_5.4.dll
Zend OPcache requires Zend Engine API version 220100525.
The Zend Engine API version 220121212 which is installed, is newer.
Contact Zend Technologies at http://www.zend.com/ for a later version of Zend OPcache.

Also, this warning can be found in %plesk_dir%\admin\logs\php_eror_log :

PHP Warning:  file(/etc/psa/psa.conf): failed to open stream: No such file or directory in C:\Program Files (x86)\Parallels\Plesk\admin\plib\Conf.php on line 26

Cause

Incorrect path to Plesk configuration file. Incorrect permissions.

Resolution

  1. Make sure that the path to Plesk configuration file is correct in [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Parallels\Engine\Config] :
    "IniFilePath"="C:\Program Files (x86)\Parallels\Plesk\admin\conf"

Note: the configuration file path can be specific on different Plesk installations

  1. Run Plesk Reconfigurator > Repair Plesk Installation > Plesk File Security or simply %plesk_bin%\reconfigurator.exe to fix broken permissions

  2. Run Plesk upgrade once again:

     "%plesk_bin%\ai.exe" --console
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