MSDTC - TransactionManagerCommunicationException

[C# Programming]

Hello,
i've implemented an application that read from a local db and write on a server db using a transaction scope. When I try to commit the transaction i receive an exception error
:
System.Transactions.TransactionManagerCommunicationException: Impossible to comunicate with transaction manager...System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL ...
in System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim)
in System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)
I've enabled MSDTC on client and server but something is wrong.
Please help if you know the solution.
Thanks in advance