- Plesk Onyx for Linux
Note: This article has the reference to the issue with the fix available:
The following error is shown when attempting to open Plesk Onyx interface or update a license key:
PLESK_ERROR: Error: The license key is invalid. In order to use Plesk, you need to obtain and install a new valid license key.
The license key is intended only for use with Plesk operating inside the following virtual environments: Virtuozzo containers, VMWare, Microsoft Hyper-V, Xen, KVM, Virtuozzo Server, LXC, Docker.
# /usr/local/psa/bin/sw-engine-pleskrun info.php
'platform' => 'dedicated',
But server virtualization is detected as
# dmesg | grep -i xen
Booting paravirtualized kernel on Xen
Xen version: 4.6.3-2.el6 (preserve-AD)
Xen: using vcpu_info placement
This is a bug in Plesk with ID #PPPM-5075, which was fixed in Plesk Onyx MU4.
Update the Plesk installation to the latest version.