[Samba] Failure to add computer to domain

[steve]

On Thu, 2014-08-07 at 07:57 +0200, Michał Półrolniczak wrote:
> This is another computer which we have similar problem.
> This is freshly installed windows 8.1 pro.
> 
> When trying to add to domain, entering good login (administrator) and
> password results in "Logon failure: unknown user name or bad password".
> Password works on on other machines and kerberos. I can ping domain.
So you can't add the computer to the domain...
> 
> I can add this computer to AD by typing login: administrator at domain, and
> passwords is accepted.
But now you can?

Do you have a Samba4 domain controller? Can you post smb.conf? The error
log?