Article ID: 119699, created on Mar 23, 2014, last review on Mar 31, 2016

  • Applies to:
  • Odin Business Automation Standard 4.5
  • Plesk Automation 11.5
  • Web Presence Builder
  • Plesk


The following error message appears in Parallels Plesk Panel interface:

ERROR: Allowed memory size of 16777216 bytes exhausted (tried to allocate 86 bytes)


Operation requires more memory than allowed for Plesk's PHP backend. This may happen if object on which operation was executed has a complex structure.


Increase memory_limit in Plesk's PHP configuration file:

  • "/usr/local/psa/admin/conf/php.ini" on Linux
  • "%plesk_dir%\admin\php.ini" on Windows

After changes are applied, restart Plesk control panel.

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