Ok, I understand what that's saying, except nothing has changed in any account or domain.



>Check http://blogs.msdn.com/sql_protocols/archive/2008/05/03/understanding-the-error-message-login-failed-for-user-the-user-is-not-associated-with-a-trusted-sql-server-connection.aspx
>
>>Windows Authentication
>>
>>
>>>Are you using SQL Server or Windows authentication in your application?
>>>
>>>>We have been having this problem the last few days where every so often when we run our app
>>>>or even try to connection we get:
>>>>
>>>>

>>>>Login failed for user ''. The user is not associated with a trusted SQL Server connection.
>>>> (Microsoft SQL Server, Error: 18452)
>>>>

>>>>
>>>>No changes have been made and the server machine is running normally.
>>>>
>>>>Anyone?