Ну и для случая утерянного вцентра:
If the KMS is accessible and the ESXi host is powered on, but the vCenter Server system is unavailable, follow these steps to unlock virtual machines.
Restore the vCenter Server system, or set up a different vCenter Server system, then establish trust with the KMS.
You must use the same key provider name, but the KMS IP address can be different.
Reregister all virtual machines that are locked.
The new vCenter Server instance retrieves the keys from the KMS and the virtual machines are unlocked.