I just finished setting this up and had similar problems.
My PDC hostname is ad1.domain.org
So my base DN is cn=users,dc=domain,dc=org (“ad1” is not part of my domain name)
All 3 of these worked for my administrator DN:
cn=Administrator,cn=users,dc=domain,dc=org
domain**\Administrator**
Administrator@domain.org
With the AD settings that you specified, try this:
Also, on the Server Settings page, make sure you set the domain = to your actual domain. If you don’t, it will cause problems when you go to create your admin account at the end of the setup.
it depends on your tree configuration. if you used cn=users,dc=domain,dc=com or something similar as your base DN you locked openfire to only look at the default Users container of AD. Best practices for AD is to not create new users in this container. My guess is your users are in a OU found elsewhere in the tree. Check your settings in the AD tool AD Users and Computers found on your domain controller.
If all your users are not located in the default Users container in AD you need to remove that part of your baseDN. In other words delete the cn=Users, from the baseDN.