Article ID: 114047, created on Jun 4, 2012, last review on Aug 12, 2014

  • Applies to:
  • Plesk
  • Virtuozzo containers


Parallels Plesk Panel fails to download a Concerto license from the Licensing server. Thus, Concerto is disabled in the web interface.


Concerto licenses work with Parallels Plesk Panel version 10.3 and newer versions, and with Parallels Virtuozzo Containers versions 4.6+ (TU-4.6.0-222).


Consider upgrading your Parallels Plesk Panel and Parallels Virtuozzo Containers installations in order to comply with the above requirements.

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