Invalid Session

[asouza]

Hello friends,

I have installed OTRS on CentOS 6 32bis, configured to connect to MSSQL 2012 32bit installed on a Win7 machine. The connection is successful, however, when I try to make a connection with any user message is displayed: "Invalid Session. Try Again..." And the log shows:

[Error][Kernel::System::AuthSession::DB::GetSessionIDData][Line:159]: [unixODBC][FreeTDS][SQL Server]Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier. (SQL-42000), SQL: '#012 SELECT id, data_key, data_value, serialized#012 FROM sessions#012 WHERE session_id = ?#012 ORDER BY id ASC'
Jun 11 16:26:26 CGO-SRVVT02 OTRS-CGI-10[3152]: [Notice][Kernel::System::AuthSession::DB::CheckSessionID] SessionID: '101ebc5017d57e02bd4cec6d1ef04e8972' is invalid!!!
Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier.Jun 11 16:30:41 CGO-SRVVT02

What can be the problem?

[crythias]

Start here.