An administrator is troubleshooting an issue where logins to vCenter Server are failing for all Active Directory users, but local users (like [email protected]) can log in successfully. The `service-control --status` command shows that all services are running, including `vmware-sts-idmd`. The administrator suspects an issue with the connection to the external identity source.
What are the most likely causes for this specific authentication failure? (Select all that apply.)
A. The password for the Active Directory service account used by vCenter has expired or is incorrect.
B. The system time on the vCenter Server Appliance is significantly out of sync with the Active Directory domain controllers.
C. A network firewall is blocking LDAP (port 389) or LDAPS (port 636) traffic between the VCSA and the domain controllers.
D. The vCenter Server's core service, `vmware-vpxd`, has stopped.
E. The vCenter Server's license has expired.