How to reset VMWare ESXi evaluation license
Make sure that the SSH service is running on your ESXi host.
Open an SSH session to your ESXi host.
Run the following commands;
rm -r /etc/vmware/license.cfg
cp /etc/vmware/.#license.cfg /etc/vmware/license.cfg
The license is again valid for 60 days after the vpxa service is restarted.