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POCOM obj error: though DTC is configured
 

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    <p>I have some c# code that is using </p> <pre><code> using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required, new TransactionOptions { IsolationLevel = System.Transactions.IsolationLevel.ReadCommitted })) { ... ts.Complete(); } </code></pre> <p>I get the following error. Do you have an idea why?</p> <blockquote> <p>Server Error in '/MyApp' Application.</p> <p>Error HRESULT E_FAIL has been returned from a call to a COM component.</p> <p>Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. </p> <p>Exception Details: System.Runtime.InteropServices.COMException: Error HRESULT E_FAIL has been returned from a call to a COM component.</p> <p>Source Error: </p> <p>An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</p> <p>Stack Trace: </p> <p>[COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component.]<br> System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid&amp; transactionIdentifier, OletxTransactionIsolationLevel&amp; isolationLevel, ITransactionShim&amp; transactionShim) +0<br> System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken) +384</p> <p>[TransactionManagerCommunicationException: Communication with the underlying transaction manager has failed.]<br> System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken) +259971<br> System.Transactions.TransactionStatePSPEOperation.PSPEPromote(InternalTransaction tx) +209<br> System.Transactions.TransactionStateDelegatedBase.EnterState(InternalTransaction tx) +339<br> System.Transactions.EnlistableStates.Promote(InternalTransaction tx) +21 System.Transactions.Transaction.Promote() +60 System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction) +71<br> System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts) +309<br> System.Data.SqlClient.SqlInternalConnection.GetTransactionCookie(Transaction transaction, Byte[] whereAbouts) +45<br> System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx) +630<br> System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction) +45<br> System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +1466<br> System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +84<br> System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +1645767<br> System.Data.SqlClient.SqlConnection.Open() +258</p> </blockquote>
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    1. USElad Benda
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    1. COAwesome exception message, detailed and saying nothing. E_FAIL sucks, doesn't mean anything more than "couldn't do it, don't know why". And a major reason everybody uses Java instead of COM+. You'll need Microsoft support if tinkering with config or a magic SO post doesn't solve it.
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      1. USHans Passant
    2. COIf you have firewall enabled, make sure it's configured for MSDTC use. If that's not it, a reinstall of MSDTC, as user9... suggests, will sometimes magically fix it.
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      1. US500 - Internal Server Error
 

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