Failed to initialize LDAP instance manager:
Action: Local ldap environment verification
Problem: LDAP tools not found in "C:\Windows\ADAM"
This issue occurs when the vCenter Server ADAM database installation conflicts with any other variation of Active Directory on the guest operating system.
Note: This issue can also occur if you are upgrading a vCenter Server that is part of a Linked Mode group. Linked Mode must be disabled before any upgrade/installation of vCenter Server.
For a list of supported operating systems for vCenter Server 5.x , see the VMware Compatibility Guide.