Hi,

I am using DNN version 07.00.06 on IIS 8, with an application pool running .net 4.0. I get an error that manifests in my sql logs as:

Login failed for user ''. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: 127.0.0.1]

Error: 18456 Severity: 14 State: 58. (Stack Trace and DNN event entry below)

The thing is is that the SQL server I'm using is set for mixed security, I am under the assumption that the resources are tied up because the lack of connections in the pool but I am not sure. Could this be an attack as it only happens once or twice an hour for a duration of anywhere between 5 mins to 45 mins.  Any help is appreciated!

Steven


And in DNN event logs as:

UserAgent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0; MDDCJS)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke
ExceptionGUID: c5159c1f-efd4-4ed7-bc12-171abbbd5265
InnerException: Login failed for user ''.[DB:SiteSqlServer/SqlServer]
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Data.SqlClient.SqlInternalConnection.
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Login failed for user ''.[DB:SiteSqlServer/SqlServer] ---> XCode.Exceptions.XDbSessionException: Login failed for user ''.[DB:SiteSqlServer/SqlServer] ---> System.Data.SqlClient.SqlException: Login failed for user ''. at System.Data.SqlClient.SqlInternalConnection. (SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) 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, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at XCode.DataAccessLayer.DbSession.Open() at XCode.DataAccessLayer.DbSession.BeginTransaction() --- End of inner exception stack trace --- at XCode.DataAccessLayer.DbSession.BeginTransaction() at XCode.Entity`1.Meta.BeginTrans() at XCode.Entity`1.DoAction(Func`1 func, Nullable`1 isnew) at XCode.Entity`1.Insert() at GiantConcepts.gc_Order`1.AddOrderRelevantInfo(Int32 portalid, Int32 serviceTypeID, Int32& orderid, Int32& orderServiceID, Int32& orderServiceInfoID, Boolean isNewAdd) at GiantConcepts.Service.PassportSmall.lkbContinue_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

Thank you for replying Cathal. I have rebooted the machine many times, mixed mode is active. The details might be in the connection strings I am using so I will check that out. If you could can you possibly take a look at them? if so here they are (The problem happens intermittentl).

Could I see that stack trace? I build Mac and iPhone apps using XCode making this topic very interesting to me now that you mention the stack contains Xcode.   It also doesn't make any sense that your seeing the Objective-C IDE since that doesn't ship with releases.  It would make more sense if you see classes like NSString or NSLog but "XCode"... that's like seeing "devenv" in the stack trace which would be very strange.

But if that is true.... then someone found a way to build DNN with Objective-C?  That would be an amazing achievement and I would love to find out how I could do that as well. 

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