When you’re going to enable Fault Tolerance on a virtual machine, you have to specify vCenter Server SSL settings because vCenter requires verified host SSL certificates in order to use FT. This option can be found at the Administration vCenter Server setting menu option.
When this option is selected, vCenter will verify the validity of the SSL certificates of the remote hosts when establishing SSL connections. This affects operations such as adding a host to vCenter Server, connecting to a VM, and making the VM devices remotely available. Selecting this option will disconnect all hosts which do not have a selected verified checkbox.
