Determining the Active Directory® Connection Address
By default,
As a best practice, we recommend using a secure connection if your server can support one. The following article from Microsoft can assist your IT staff in configuring your server to use a secure connection: Frequently Asked Questions About Changes to Lightweight Directory Access Protocol.
Reverting to a Standard Connection
If your server does not support a secure connection, you can downgrade to a standard connection. To do so, update the connection address to include only your firm's domain name.