An existing vCloud Director environment that has been operational for a year is suddenly
inaccessible via its web site.
The following error appears:
Could not verify this certificate for unknown reasons
Which course of action should an administrator take to address this problem?

A.
Issue the command service vmware-vcd stop. Obtain or generate a new security certificate.
Install the certificate using /opt/vmware/cloud-director/bin/configure. Start the vCD service.

B.
Access the vCloud Director administration web site through the internal network address. From
within the Security option under the Administration tab, generate a new, self-signed certificate.

C.
Generate a new certificate using keytool from within the vCD VM. Change the permissions on
the resulting certificates.ks file to be readable by vcloud.vcloud. Issue the command service
vmware-vcd restart.

D.
Issue the command service vmware-vcd stop. Install a new certificate using the command
keytool –keystore certificates.ks –storetype JCEKS –storepass passwd –genkey –keyalg RSA –
alias http. Issue the command service vmware-vcd start.