Cannot install Plesk license key: Error: The license key is invalid. In order to use Plesk, please obtain and install a new valid license key

Symptoms

• License key installation fails with the following error:

  PLESK_ERROR: Error: The license key is invalid. In order to use Plesk, please obtain and install a new valid license key.
  The license key is intended only for use with Parallels Plesk operating inside the following virtual environments: Parallels Virtuozzo Containers, VMWare, Microsoft Hyper-V, Xen, KVM, Parallels Server.

• Installing a key through CLI fails with the following error:

  # plesk bin license -i XXXXXX-XXXXXX-XXXXXX-XXXXXX-XXXXXX
  PHP Warning: Invalid argument supplied for foreach(); File: /usr/local/psa/admin/plib/StatInfo.php, Line: 372
  PHP Warning: reset() expects parameter 1 to be array, boolean given; File: /usr/local/psa/admin/plib/StatInfo.php, Line: 309
  The license key was successfully installed.

Cause

• The following file is empty or contains incorrect data:

  # ls -al /usr/local/psa/admin/sbin/wrapper
  —s–x—. 1 root psaadm 0 jan 22 21:31 /usr/local/psa/admin/sbin/wrapper

Resolution

1. Log in to the server via SSH.

2. Reinstall plesk-service-node-utilities package.
   This example is for CentOS 7 with the latest Plesk Obsidian 18.0.30 version:

   # rpm -Uhv –force https://autoinstall.plesk.com/PSA_18.0.30/dist-rpm-CentOS-7-x86_64/base/plesk-service-node-utilities-18.0-2.centos.7+p18.0.30.2+t200930.1355.x86_64.rpm

   Note: If the Plesk version or OS are different open a support ticket with Plesk for further assistance.