Log into your VCSA and enable the shell to access the Bash prompt:
Adding the license doesn’t immediately assign it to operate on the host; it simply adds it to the list of available licenses. To set the newly added key as active, locate its LicenseKey string (returned from step 2) and assign it: vcenter license key command line
While vCenter itself requires the UpdateAssignedLicense method, individual ESXi hosts managed by vCenter can be licensed more simply: powershell Log into your VCSA and enable the shell