License and evaluation period expiry lead to consequences that prevent you from performing certain operations in the vSphere environment.
For ESXi hosts, license or evaluation period expiry leads to disconnecting the hosts from vCenter Server. All powered-on virtual machines continue to work, but you cannot power on virtual machine once they are powered-off. You cannot change the current configuration of the features that are already in use. You cannot use the features that remained unused while the host was in evaluation mode.
When the license or evaluation period of a vCenter Server system expires, all hosts disconnect from that vCenter Server system.
The specifics of every solution determine the consequences of the license or evaluation mode expiry. Refer to the solution documentation for details