I am making progress on configuring a Linux desktop to join the AD domain (without likewise-open). Samba "workgroup" needed to be set to the netbios name of the server (contrary to a lot of documentation out there). I am down to the domain name being listed in upper case rather than lower case, as it should be. ./net.samba3 ads join -U administrator -S bbserver.lctn.priv Enter administrator's password: Failed to join domain: Invalid configuration ("realm" set to 'LCTN.PRIV //YOUR REALM', should be 'lctn.priv') and configuration modification was not requested According to the docs, the domain name should be set to uppercase in kerberos, which I thought was where the error message was getting its info, so I changed everything to lowercase, created a new realm and restarted kerberos, but it still comes back with the same error. I am assuming this is a samba problem and have seen some discussion on it, but not clear how to get the domain to come back in lowercase. Anyone have the answer?