For people who needs to extend their vSphere trial, try with the steps below.
1. Go to Licence and put a Free Licence from VMware Portal
2. service.sh restart
3. rm -r /etc/vmware/license.cfg
4. cp /etc/vmware/.#license.cfg /etc/vmware/license.cfg
5. /etc/init.d/vpxa restart
6. service.sh restart
7. Go to Licence and put back to Evaluate Mode for 60 new Days