I am using SDL Tridion 2013 SP1 and Content Porter 2013 SP1. While importing I am getting the below error message. Yesterday the import was working fine. Can anyone please help to resolve this issue. Thanks in Advance.
**[Error] System.Transactions.TransactionManagerCommunicationException: Communication with the underlying transaction manager has failed. ---> System.Runtime.InteropServices.COMException: The MSDTC transaction manager was unable to pull the transaction from the source transaction manager due to communication problems. Possible causes are: a firewall is present and it doesn't have an exception for the MSDTC process, the two machines cannot find each other by their NetBIOS names, or the support for network transactions is not enabled for one of the two transaction managers. (Exception from HRESULT: 0x8004D02B)
at System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim)
at System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)
--- End of inner exception stack trace ---
at System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)
at System.Transactions.TransactionStatePSPEOperation.PSPEPromote(InternalTransaction tx)
at System.Transactions.TransactionStateDelegatedBase.EnterState(InternalTransaction tx)
at System.Transactions.EnlistableStates.Promote(InternalTransaction tx)
at System.Transactions.Transaction.Promote()
at System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction)
at System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts)
at System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx)
at System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction)
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, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at Tridion.ContentManager.Data.AdoNet.Sql.SqlDatabaseUtilities.GetConnection()
at Tridion.ContentManager.Data.AdoNet.Sql.SqlDatabaseUtilities.GetStoredProcedureCommand(StoredProcedureInvocation storedProcedureInvocation)
at Tridion.ContentManager.Data.AdoNet.Sql.SqlDatabaseUtilities.Execute(StoredProcedureInvocation storedProcedureInvocation)
at Tridion.ContentManager.Data.AdoNet.IdentifiableObjectDataMapper.Tridion.ContentManager.Data.IIdentifiableObjectDataMapper.IsExistingObject(TcmUri id)
at Tridion.ContentManager.Session.IsExistingObject(String uri)
at Tridion.ContentManager.StronglyTypedFilter.ValidateLinks(Session session)
at Tridion.ContentManager.Workflow.WorkflowManager.GetListProcessDefinitionsData(ProcessDefinitionsFilter& filter)
at Tridion.ContentManager.Workflow.WorkflowManager.GetProcessDefinitions(ProcessDefinitionsFilter filter)
at Tridion.ContentManager.ImportExport.AbortErrorHandler.Invoke[T](Func2 function, LocalizableMessage message, Boolean retryAvailable, Boolean isCritical, UserReply additionalUserReplyOptions)
at Tridion.ContentManager.ImportExport.MappingsResolver.UpdateProcessDefinitionMappings(Repository publication)
at Tridion.ContentManager.ImportExport.ImportAction.SaveItem(IdentifiableObject item, IdentifiableObjectData deltaObject)
at Tridion.ContentManager.ImportExport.UpdateImportAction.Perform(IdentifiableObjectData itemData)
at Tridion.ContentManager.ImportExport.Importer.ImportItem(WebDavUrl exportUrl, IList1 dependentItemsChain, Dictionary2 unresolvedDependencies, Boolean specialImport)
at Tridion.ContentManager.ImportExport.Importer.ImportItem(WebDavUrl exportUrl, IList1 dependentItemsChain, Dictionary2 unresolvedDependencies, Boolean specialImport)
at Tridion.ContentManager.ImportExport.Importer.ImportItems(IList1 items, Boolean specialGroupImport)
at Tridion.ContentManager.ImportExport.Importer.Import(String packageName)
[Information] Transactional import failed at 4/16/2014 12:05:00 AM. No changes were committed to Tridion Content Manager.
**
