Author : Doreen Kasson
Topic Name : After You Install vCenter Server
Publication Name : vSphere Installation and Setup
Product/Version : VMware vSphere/5.5
Question :
vcenter active directory authentication setup
Hi
Check if the following article helps:
https://www.virten.net/2013/09/howto-ad-authentication-in-vcenter-sso-5-5/
For vCenter Server 5.5, see the following for setting up a vCenter SSO identity source which can be a native Active Directory:
I'd also recommend you to upgrade to VCSA 6.5/6.7 since 5.5 it's not supported anymore.