用戶'sa'登錄失敗。原因：未與可信的SQL關聯

Question

我正在開發一個Windows服務以將數據從一個遠程數據庫傳輸到另一個數據庫。

我收到以下錯誤，當我嘗試連接到數據庫。這個連接字符串在Web應用程序中完美工作。

只有當我嘗試連接使用Windows服務數據庫中，我得到這個錯誤。我使用

System.Data.SqlClient.SqlException: Login failed for user 'sa'. Reason: Not associated with a trusted SQL Server connection. 
    at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) 
    at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) 
    at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) 
    at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) 
    at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) 
    at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) 
    at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) 
    at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) 
    at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) 
    at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) 
    at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) 
    at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) 
    at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) 
    at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) 
    at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 
    at System.Data.SqlClient.SqlConnection.Open() 
    at WindowsService.Program.timer1_Elapsed(Object sender, EventArgs e) in E:\Trigger\WindowsService\WindowsService\Program.cs:line 93 

的ConnectionString：

SqlConnection con = new SqlConnection("Data Source=TAG2;Initial Catalog=A10;User ID=sa; pwd=root;Integrated Security=False");" 

Answer 1

在SQL Server是最有可能設置爲 「Windows認證只是」 模式。

看到這個MSDN link解決您的錯誤。

Answer 2

請檢查您的數據庫中的設置 - 你可能需要從 「僅適用於Windows」更改身份驗證方法「SQL身份驗證」

你可以閱讀更多here

Answer 3

作爲默認安裝的，我認爲，它被設置爲只允許Windows身份驗證。但是，使用Sql Server Management Studio（如果使用），您可以啓用Sql Server身份驗證。請點擊這裏http://cherupally.blogspot.com.au/2009/04/user-is-not-associated-with-trusted-sql.html