Plesk license key upload error: The license key is invalid. In order to use Plesk, please obtain and install a new valid license key

Symptoms

License Key upload failed 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.

Cause

The Plesk service cannot execute a back-end utility or the utility is unable to change some files because of incorrect permissions.

Resolution

1. Connect to the server via SSH

2. Make sure that the following files have proper permissions and owners:

   # ls -al /usr/local/psa/admin/sbin/*wrapper
   —s–x— 1 root psaadm 13120 Jun 13 21:51 ./admin/sbin/mod_wrapper
   —s–x— 1 root psaadm 13632 Jun 13 21:51 ./admin/sbin/wrapper

3. If you see different permissions or owners, run the commands from the following article Different operations in Plesk fails with error: System error 13: Permission denied to correct them.

4. Remove the /etc/sw/keys/registry.xml file.

   # rm -f /etc/sw/keys/registry.xml

5. Log into Plesk. The registry.xml file will be recreated.

6. If the issue persists, check the steps in the following article: The license key is intended only for use with Plesk operating inside the following virtual environments