Using AD module. You will see "Error: Not Authenticated" if username with no password is entered. If you enter a wrong username or username with a wrong password, the message returned is "username or password not found"
Virtual Appliance
Identity Manager
14.5.1
Patch needed so when using AD module all combinations of username and password or nulls always return "username or password not found"
Please open a case with support and reference DE626212.