Article ID: 123105, created on Oct 9, 2014, last review on Jun 9, 2015

  • Applies to:
  • Plesk 12.0 for Linux
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux


When you try to update the Plesk license key via web interface you receive the following error:

*Unable to connect to license server
cURL error description: Problem with the SSL CA cert (path? access rights?)(77)*


It is caused by update of system packages nss-softokn, nss-softokn-freebl on installed Plesk for CentOS 6/RedHat EL6.


Restart sw-engine with

service sw-engine restart

Search Words

plesk license not auto renewing

cannot retrieve keys

SSL connect error


License cannot be renewed [P4]

SSL Connect error

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