vCenter AD authentication

When enabling Active Directory authentication on the vCenter appliance, ensure that DNS name resolution is working first. Set the DNS settings and hostname and then ensure that resolution and reverse-lookup of the FQDN works. It may be necessary to add the Host(A) record and pointer for the vCenter appliance on the DNS server itself.

Failed AD activation (no DNS entry, and vCenter doesn’t register itself it seems):

vCenter_network_config_1

After adding host and reverse lookup records on the DNS server:

vCenter_network_config_2

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