Our company has just been bought and the over the weekend I have brought up the last few machines to plug into their network (they are under a different Windows Domain).
The last machine is our Vault system and the SQL Server was using Windows Authentication.
I have plugged it into their network and its working fine, but i cannot connect to SQL Server with Management Studio and, I fear, no backup jobs will also be working.
When I try to login under Windows Auth, it has the user name of "NEWDOMAIN\Administrator" (greyed out) and then presents a "login failed" message with error code "18456".
Can anyone help me with this, or will I just have to reinstall SQL Server, Vault and restore the backup I took before the move?