我有一个应用程序和WCF服务这是application.What的一部分正在发生的事情，如果我拨打服务直接就导致了以下异常：SQL异常用户登录失败
“System.Web.Services。 Protocols.SoapException：服务器无法处理请求---> System.Data.SqlClient.SqlException：用户'Kanix'登录失败。\ u000a在System.Data.SqlClient.SqlInternalConnection.OnError（SqlException异常，Boolean breakConnection， Action 1 wrapCloseInAction)\u000a at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)\u000a at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)\u000a at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)\u000a at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)\u000a at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)\u000a at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)\u000a at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)\u000a at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData)\u000a at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)\u000a at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)\u000a at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)\u000a at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)\u000a at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)\u000a at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource 1 retry，DbConnectionOptions userOptions，DbConnectionInternal & connection）\ u000a at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection（DbConnection owningConnection，TaskCompletionSource 1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)\u000a at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource 1 retry，DbConnectionOptions userOptions）在System.Data.SqlClient.SqlConnection.TryOpenInner（TaskCompletionSource 1 retry)\u000a at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource 1重试）\ u000a \ u000a在System.Data.SqlClient.SqlConnection.Open（）\ u000a at DataAccessLayer.SQLHelper.GetMultipleResultSets（String strSQlSPName，Dictionary 2& params, List 1 outParams）in D：\ TFS SAAS \ HighriseLicensing- \ DataAccessLayer \ SqlHelper.vb：D：\ TFS中的DataAccessLayer.LoginDL.AuthenticateKey（字符串键，Int32 guid，字符串用户ID，Int32模式）的第162行\ SAAS \ HighriseLicensing- \ DataAccessLayer \登录D：\ TFS SAAS \ HighriseLicensing- \ BusinessLogicLayer \ LoginBL.vb中的BusinessLogicLayer.LoginBL.AuthenticateKey（字符串键，Int32 guid，字符串用户ID，Int32模式）中的LoginDL.vb：第20行\ u000a：Lincensing处的第18行。 GetFaith.CheckKeyvalidity（String key，Int32 guid，String InstallationId，Int32 Mode）in D：\ TFS SAAS \ HighriseLicensing- \ Lincensing \ GetFaith.asmx.vb：line 53 \ u000a at Lincensing.GetFaith.CheckKey（String key，Int32 guid ，String InstallationId，Int32模式）在D：\ TFS SAAS中\ HighriseLicensing- \ Lincensing \ GetFaith.asmx.vb：第23行\ u000a ---内部异常堆栈跟踪结束---“
一个重要的事情是，当我从应用程序登录时，我从应用程序注销它给这个错误。